APA Edition Citation

John, G., & Humphry, D. (1971). Because they're black [by] Gus John and Derek Humphry. Penguin Books.

Chicago Edition Citation

John, Gus, and Derek Humphry. Because They're Black [by] Gus John and Derek Humphry. [Harmondsworth, Eng.]: Penguin Books, 1971.

MLA Edition Citation

John, Gus, and Derek Humphry. Because They're Black [by] Gus John and Derek Humphry. Penguin Books, 1971.

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