How to cite a book when both the first and the latest editions' years matter? I want to cite a proof appearing in the book from 1982. The thing is, the book has a newer edition from 2002; but at the same time, it's important for me to indicate the result is from 1982. On the other hand, I don't want to draw as much attention to this fact as I would do if I devoted full sentences of text making this observation (also, this would interrupt my narrative flow).

How should I cite this result so as to indicate both what the reader should look for right now, and when the result was published?

The citation formatting is not critical to this question, i.e. just assume any citation format you like to answer it. Also, I use LaTeX if it matters (it might not).
What you are asking is somewhere between an annotated bibliography and a normal reference list. I'm not aware of a formal way to do this.

However, this is the APA way to cite a republished book:


  Doe, J. (2002). On the Fooing of Bars (6th ed.). Washington, DC: Baz Publishers. (Original work published 1982)


For your purpose, to indicate not the orignal edition but the first edition in which a certain proof appears, I suggest to adapt it this way:


  Doe, J. (2002). On the Fooing of Bars (6th ed.). Washington, DC: Baz Publishers.
   (The proof first appeared in the 2nd edition, 1982)


In both cases, the in-text reference would be: 


  (Doe, 1982/2002)