APA (7th ed.) Citation

Hems, D. (1977). Biologically active substances -exploration and exploitation. John Wiley and Sons.

Chicago Style (17th ed.) Citation

Hems, D.A. Biologically Active Substances -exploration and Exploitation. Chichester: John Wiley and Sons, 1977.

MLA (9th ed.) Citation

Hems, D.A. Biologically Active Substances -exploration and Exploitation. John Wiley and Sons, 1977.