APA (7th ed.) Citation

Lincoln, A. (2012). The Lincoln Year Book Axioms and Aphorisms from the Great Emancipator. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lincoln, Abraham. The Lincoln Year Book Axioms and Aphorisms from the Great Emancipator. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Lincoln, Abraham. The Lincoln Year Book Axioms and Aphorisms from the Great Emancipator. Project Gutenberg, 2012.

Warning: These citations may not always be 100% accurate.