Cita APA (7th ed.)

Paker, J., & Walters, M. (1993). The Illustrated dictionary of prehistoric life. Merlion Pub.

Cita Chicago (17th ed.)

Paker, Josephine, i Martin Walters. The Illustrated Dictionary of Prehistoric Life. Wiltshire, U.K: Merlion Pub, 1993.

Cita MLA (9th ed.)

Paker, Josephine, i Martin Walters. The Illustrated Dictionary of Prehistoric Life. Merlion Pub, 1993.