Other sources like Wikibook uses plain string
month = "November", and Tame the BeaST mentions all three: abbreviated macros, strings and integers:
month = 11, or
month = 11,.
Why should I use something else then three letter macros? Is there any sane use cases for integers or strings? As far as I understand using anything else than macros will cause problems with non-english languages, so why those sources are advocating format which will cause problems later. Are they giving bad advice for newcomers?
Note: I had to break links because link limit.