BibTeX: same layout of all entries in bibliography?

Question

I'm writing a "report" and using BibTeX for the literature and I have different types of BibTeX entries like book, article, misc, PhdThesis, MastersThesis, ...

\urlstyle{same} 

    \bibliographystyle{agsm} %Harvard style
    \bibliography{literature}

I want to make all entries formatted the same for the same fields (e.g. all titles field are formatted italic, independent of the BiBTeX entry type). A little bit like the URL formatting.

I have found an similar question from 2015 about the same topic: Get same layout for title-tag in misc and book using natbib

Is there a simpler method instead of replacing the bst of each entry to make it appear the same?

Here is the example of a minimum:

\documentclass{report}
\begin{document}

I cite \citep{Luhmann1979} and \citep{Doney1998}.

\urlstyle{same}
\bibliography{literature}
\bibliographystyle{agsm}
\end{document}

Examples of my BibTeX entries:

   @Book{Luhmann1979,
  title     = {Trust and power},
  publisher = {John Wiley \& Sons},
  year      = {1979},
  author    = {Luhmann, Niklas},
}

@Article{Doney1998,
  author    = {Doney, Patricia M and Cannon, Joseph P and Mullen, Michael R},
  title     = {Understanding the influence of national culture on the development of trust},
  journal   = {Academy of management review},
  year      = {1998},
  volume    = {23},
  number    = {3},
  pages     = {601--620},
  publisher = {Academy of Management Briarcliff Manor, NY 10510},
}

Answer 1

The solution to remove the quote marks of the title in the .bst (in my case agsm.bst): e.g. for MISC: line 902: FUNCTION {misc} -> line 908: format.title quote output -> remove "quote" -> format.title output

Thank you very much for your help