Cita APA

Walker, C., & Ward, D. (2000). Fossils, Dorling Kindersley Handbooks.

Chicago Edition Citation

Walker, Cyril, i David Ward. Fossils, Dorling Kindersley Handbooks. London, D K, 2000.

Cita MLA

Walker, Cyril, i David Ward. Fossils, Dorling Kindersley Handbooks. 2000.