Cita APA (7a ed.)

Hayes, N. (1994). Principles of comparative psychology. Lawrence Erlbaum.

Cita Chicago Style (17a ed.)

Hayes, Nicky. Principles of Comparative Psychology. Hove [etc.]: Lawrence Erlbaum, 1994.

Cita MLA (9a ed.)

Hayes, Nicky. Principles of Comparative Psychology. Lawrence Erlbaum, 1994.