Cita APA (7a ed.)

Walker, A., & Leakey, R. E. (1993). The Nariokotome Homo erectus skeleton. Springer.

Cita Chicago Style (17a ed.)

Walker, Alan, y Richard E. Leakey. The Nariokotome Homo Erectus Skeleton. Berlin [etc.]: Springer, 1993.

Cita MLA (9a ed.)

Walker, Alan, y Richard E. Leakey. The Nariokotome Homo Erectus Skeleton. Springer, 1993.