APA (7th ed.) Citation

Angelou, M. (1971). I know why the caged bird sings. Bantam Books.

Chicago Style (17th ed.) Citation

Angelou, Maya. I Know Why the Caged Bird Sings. New York: Bantam Books, 1971.

MLA (9th ed.) Citation

Angelou, Maya. I Know Why the Caged Bird Sings. Bantam Books, 1971.