Cita APA (7a ed.)

James, W. (1952). The Principles of psychology. Encyclopaedia Britannica.

Cita Chicago Style (17a ed.)

James, William. The Principles of Psychology. Chicago [etc.]: Encyclopaedia Britannica, 1952.

Cita MLA (9a ed.)

James, William. The Principles of Psychology. Encyclopaedia Britannica, 1952.