APA (7th ed.) Citation

Weston, F., & Smuts, J. C. (1918). The black slaves of Prussia: An open letter addressed to General Smuts. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Weston, Frank, and Jan Christiaan Smuts. The Black Slaves of Prussia: An Open Letter Addressed to General Smuts. Boston: Houghton Mifflin, 1918.

MLA (9th ed.) Citation

Weston, Frank, and Jan Christiaan Smuts. The Black Slaves of Prussia: An Open Letter Addressed to General Smuts. Houghton Mifflin, 1918.