Cita APA (7th ed.)

Angelou, M. (2009). I know why the caged bird sings (Ballantine Books mass market ed.). Ballantine Books.

Cita Chicago (17th ed.)

Angelou, Maya. I Know Why the Caged Bird Sings. Ballantine Books mass market ed. New York: Ballantine Books, 2009.

Cita MLA (9th ed.)

Angelou, Maya. I Know Why the Caged Bird Sings. Ballantine Books mass market ed. Ballantine Books, 2009.