APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Zelvelder, Willem Gerrit. Therapeutic Evaluation of Hypnotics: An Experimental Study in Hospitalized Patients. Assen: Van Gorcum, 1971.

MLA (9th ed.) Citation

Zelvelder, Willem Gerrit. Therapeutic Evaluation of Hypnotics: An Experimental Study in Hospitalized Patients. Van Gorcum, 1971.