Cita APA (7a ed.)

Johanson, D. C., & Shreeve, J. (1989). Lucy's child: The discovery of a human ancestor. Penguin Books.

Cita Chicago Style (17a ed.)

Johanson, Donald C., y James Shreeve. Lucy's Child: The Discovery of a Human Ancestor. Harmondsworth: Penguin Books, 1989.

Cita MLA (9a ed.)

Johanson, Donald C., y James Shreeve. Lucy's Child: The Discovery of a Human Ancestor. Penguin Books, 1989.