APA (7th ed.) Citation

(1970). Martin Luther King. A critical biography. Allen Lane the Penguin Press.

Chicago Style (17th ed.) Citation

Martin Luther King. A Critical Biography. Allen Lane the Penguin Press, 1970.

MLA (8th ed.) Citation

Martin Luther King. A Critical Biography. Allen Lane the Penguin Press, 1970.

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