MLA

Zelvelder, W. G. Therapeutic Evaluation of Hypnotics : an Experimental Study In Hospitalized Patients. Assen: Van Gorcum, 1971.

APA

Zelvelder, W. G. (1971). Therapeutic evaluation of hypnotics : an experimental study in hospitalized patients. Assen: Van Gorcum.

Chicago

Zelvelder, W. G. Therapeutic Evaluation of Hypnotics: An Experimental Study In Hospitalized Patients. Assen: Van Gorcum, 1971.