APA (7th ed.) Citation

Wilson, R. R. (2014). Lincoln in Caricature. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wilson, Rufus Rockwell. Lincoln in Caricature. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Wilson, Rufus Rockwell. Lincoln in Caricature. Project Gutenberg, 2014.

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