APA (7th ed.) Citation

Butler, E. P. (1909). Pigs is pigs: Illustr. by Will Crawford. Doubleday, Page.

Chicago Style (17th ed.) Citation

Butler, Ellis P. Pigs Is Pigs: Illustr. by Will Crawford. New York: Doubleday, Page, 1909.

MLA (9th ed.) Citation

Butler, Ellis P. Pigs Is Pigs: Illustr. by Will Crawford. Doubleday, Page, 1909.

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