Cita APA (7a ed.)

Trettien, A. W. (1935). Why we feel that way: An analysis of the human emotions. Stratford.

Cita Chicago Style (17a ed.)

Trettien, Augustus William. Why We Feel That Way: An Analysis of the Human Emotions. Boston: Stratford, 1935.

Cita MLA (9a ed.)

Trettien, Augustus William. Why We Feel That Way: An Analysis of the Human Emotions. Stratford, 1935.