Cita APA (7a ed.)

Tolsma, F. J. (1964). Psychological disturbances after a pet dog's death. [s.n.].

Cita Chicago Style (17a ed.)

Tolsma, F. J. Psychological Disturbances After a Pet Dog's Death. [S.l.]: [s.n.], 1964.

Cita MLA (9a ed.)

Tolsma, F. J. Psychological Disturbances After a Pet Dog's Death. [s.n.], 1964.