Cita APA (7a ed.)

Shepard, P., & Shepard, F. R. (1998). Coming home to the Pleistocene. Island Press.

Cita Chicago Style (17a ed.)

Shepard, Paul, y Florence R. Shepard. Coming Home to the Pleistocene. Washington, D.C.: Island Press, 1998.

Cita MLA (8a ed.)

Shepard, Paul, y Florence R. Shepard. Coming Home to the Pleistocene. Island Press, 1998.