Cita APA (7th ed.)

Adamson, J. (1972). Pippa's Challenge: Joy Adamson (autor). Fontan / Collins.

Cita Chicago (17th ed.)

Adamson, Joy. Pippa's Challenge: Joy Adamson (autor). London, Great Britain: Fontan / Collins, 1972.

Cita MLA (9th ed.)

Adamson, Joy. Pippa's Challenge: Joy Adamson (autor). Fontan / Collins, 1972.