MLA

Kielholz, Paul. Depressive Illness : Diagnosis, Assessment, Treatment. Bern: Huber, 1972.

APA

Kielholz, P. (1972). Depressive illness : diagnosis, assessment, treatment. Bern: Huber.

Chicago

Kielholz, Paul, ed. Depressive Illness: Diagnosis, Assessment, Treatment. Bern: Huber, 1972.