APA (7th ed.) Citation

Guion, D. W. (1918). Some o' these days: Darkey spirituals. M. Witmark.

Chicago Style (17th ed.) Citation

Guion, David W. Some O' These Days: Darkey Spirituals. New York: M. Witmark, 1918.

MLA (9th ed.) Citation

Guion, David W. Some O' These Days: Darkey Spirituals. M. Witmark, 1918.