Cita APA (7th ed.)

Angelou, M. (2002). I know why the caged bird sings. Penguin Books.

Cita Chicago (17th ed.)

Angelou, Maya. I Know Why the Caged Bird Sings. Harlow: Penguin Books, 2002.

Cita MLA (8th ed.)

Angelou, Maya. I Know Why the Caged Bird Sings. Penguin Books, 2002.