APA (7th ed.) Citation

Etulain, R. W. (2020). Billy the Kid: A reader's guide. University of Oklahoma Press.

Chicago Style (17th ed.) Citation

Etulain, Richard W. Billy the Kid: A Reader's Guide. Norman: University of Oklahoma Press, 2020.

MLA (9th ed.) Citation

Etulain, Richard W. Billy the Kid: A Reader's Guide. University of Oklahoma Press, 2020.