Cita APA (7a ed.)

Kantor, J. R. (1969). The scientific evolution of psychology. The Principia Press, Inc.

Cita Chicago Style (17a ed.)

Kantor, J. R. The Scientific Evolution of Psychology. Chicago, Illinois ; Granville, Ohio: The Principia Press, Inc, 1969.

Cita MLA (9a ed.)

Kantor, J. R. The Scientific Evolution of Psychology. The Principia Press, Inc, 1969.