Cita APA (7a ed.)

Bell, R. (1978). Classification and symptomatology. Core knowledge in the drug field.

Cita Chicago Style (17a ed.)

Bell, R. "Classification and Symptomatology." Core Knowledge in the Drug Field 1978.

Cita MLA (8a ed.)

Bell, R. "Classification and Symptomatology." Core Knowledge in the Drug Field, 1978.