Cita APA (7th ed.)

SpringerLink (Online service) & Harrison, T. (2011). Paleontology and geology of Laetoli: human evolution in context: Volume 2: fossil hominins and the associated fauna. Springer.

Cita Chicago (17th ed.)

SpringerLink (Online service) i Terry Harrison. Paleontology and Geology of Laetoli: Human Evolution in Context: Volume 2: Fossil Hominins and the Associated Fauna. Dordrecht, New York: Springer, 2011.

Cita MLA (9th ed.)

SpringerLink (Online service) i Terry Harrison. Paleontology and Geology of Laetoli: Human Evolution in Context: Volume 2: Fossil Hominins and the Associated Fauna. Springer, 2011.