How to typeset a reference to a footnote?

I want to enter in a footnote a reference to another footnote (in this case it's on the same page above).

I found out how I can create the reference, so that it is formatted like a "normal" footnote number (http://tex.stackexchange.com/questions/16866/how-can-i-use-footnotemark-with-a-ref-argument), but how should I typeset it?

Is it ok like in the picture below (in english "see footnote" with a spacebetween the word "footnote" and the footnotemark?

Or how could that be done better?

• Maybe without the space?
• .. or even not as a footnotemark, but as a normal number (in normalsize)?

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In my opinion, you should use full-size numbers -- not only for references to footnotes, but also for the actual notes.

Quoting Bringhurst, The Elements of Typographic Style, p. 69:

4.3.3 Use superscripts in the text but full-size numbers in the notes themselves

In the main text, superscript numbers are used to indicate notes because superscript numbers minimize interruption. They are typographic asides: small because that is an expression of their relative importance, and raised for two reasons: to keep them out of the flow of the main text, and to make them easier to find. In the note itself, the number is not an aside but a target. Therefore the number in the note should be full size.

EDIT: Here's an example using the scrextend package which is part of KOMA-script:

\documentclass{article}

\usepackage{scrextend}
\deffootnote{2em}{1.6em}{\thefootnotemark\hspace{0.7em}}

\usepackage[english]{babel}
\usepackage{blindtext}

\begin{document}

\blindtext\footnote{\blindtext}

\end{document}

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thanks, that sounds convincing. Does this also correspond to German typographic conventions? BTW, I'd propose to use the KOMA-script class scrartcl in the example –  Martin Apr 28 '11 at 19:57
@Martin: I use KOMA-script classes, too -- I just wanted to point out that one may also use \deffootnote with the standard classes. As for German typographic conventions: Some are good, some are bad, and some (e.g. for footnotes) may be non-existent. –  lockstep Apr 28 '11 at 20:01
a comment en passant: this convention about footnotes is enforced in the French rules for typography, as is seen when one employs \usepackage[french]{babel} –  jfbu Apr 30 '11 at 13:52

Use the \deffootnote command as was given by Lockstep to change the footnote display. Regarding your question about the reference to a different footnote inside a footnote you can use the following \reffnmark command. Note that the * version gives the original mark and can be also be used to point intext footnotes to the same footnote (repeated footnote). I prefer the normal sized number to refere to a footnote, e.g. footnote (10).

\documentclass{article}

\makeatletter
\newcommand\reffnmark{%
\@ifstar{\@reffnmarks}{\@reffnmark}}
\newcommand{\@reffnmarks}[1]{%
\begingroup
\unrestored@protected@xdef\@thefnmark{\ref{#1}}%
\endgroup
\@footnotemark}
\newcommand{\@reffnmark}[1]{(\ref{#1})}
\makeatother

\begin{document}

This is a footnote test\footnote{first footnote\label{fn:first}}\par
Footnote\reffnmark*{fn:first} pointing to same footnote\par
Footnote\footnote{In footnote \reffnmark{fn:first} ...} with ref to first\par

\end{document}

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Great solution! Is it possible to get a reference with the normal sized, non-superscript number /without/ parentheses? –  Mårten Feb 4 '13 at 2:51
@Mårten: Yes, just rewrite the command \newcommand{\@reffnmark}[1]{\ref{#1}} by removing the parentheses. –  Danie Els Feb 4 '13 at 5:57