APA (7th ed.) Citation

Hamid, A. (1920). The black challenger to white supremacy. [publisher not identified].

Chicago Style (17th ed.) Citation

Hamid, Abdull. The Black Challenger to White Supremacy. [New York, N.Y.]: [publisher not identified], 1920.

MLA (9th ed.) Citation

Hamid, Abdull. The Black Challenger to White Supremacy. [publisher not identified], 1920.