Παραπομπή APA

Hems, D. A. (1970). Biologically active substances exploration and exploitation. The Ronald Press Co.John Wiley.

Παραπομπή Chicago Style

Hems, D. A. Biologically Active Substances Exploration and Exploitation. New York: The Ronald Press Co.John Wiley, 1970.

Παραπομπή MLA

Hems, D. A. Biologically Active Substances Exploration and Exploitation. The Ronald Press Co.John Wiley, 1970.