Citations in a Paper After the Whole Quotation is Shown Say I have a quotation that is written at the top of my page something like this:

Abook
Robert Contor was always an odd fellow, but when the neighbors discovered his secret, everything changed. (p. 12)

Then, in my paragraph, I reference the quotation like this:

In Abook, it says that Robert Contor's life changed irreversibly after &quot;the neighbors discovered his secret&quot;. This shows that .......

To be fully correct and not even have to worry about plagiarism and incorrect citations, do I have to include:

(Abook Leauthor p. 12)

or something like that? Can I legitimately get away with not adding the inline citations after every quotation, even though it is obvious what I'm citing? Does this apply in general when it is fairly obvious where the quotation came from?
Thanks a lot in advance. All responses are greatly appreciated!
I'd look for some form of "short citation" format in whatever style you are using. E.g. the first time around give the full citation, and later on the short one. Another technique would be to cite once, and then just go "As Leauthor says, ...", or even just try to keep all this together. If it is a long discussion, you might even dedicate a (sub)section to this, using sectioning to have it hang together.

In LaTeX/BibTeX I use the plain citation style, which gives a unintrusive [42] only. But that is major surgery...