APA (7th ed.) Citation

Field, E., & Field, R. M. (2006). A Little Book of Western Verse. Project Gutenberg.

Chicago Style (17th ed.) Citation

Field, Eugene, and Roswell Martin Field. A Little Book of Western Verse. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Field, Eugene, and Roswell Martin Field. A Little Book of Western Verse. Project Gutenberg, 2006.

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