Evidence Explained, a book by Elizabeth Shown MIlls, has been the genealogist's go-to guide for citations since it was first published in 1997. With the publication of a Fourth Edition earlier this year, one might anticipate an even thicker book but no! 

Blogger Dr. Mac, whose posts can be found at Aweekofgenealogy.com, has reviewed Mills' new Fourth Edition. He says, in part:

New technology means more and different sources to cite, and the book has been expanded to conquer them all. It is difficult to imagine how this magic has been done, given that the page count of the book has been reduced from the 892 pages of the Third Edition (Revised) to 739 pages. Ms. Mills has accomplished this seeming legerdemain, not with a slight of hand, but through the use of templates.

Read about how "less is more" and see current, timely examples in Dr. Mac's May 10th book review.