MLA

Berle, Judith, and E. G. C Clarke. Isolation and Identification of Drugs In Pharmaceuticals, Body Fluids and Post-mortem Material. London: Pharmaceutical press, 1969.

APA

Berle, J., & Clarke, E. G. C. (1969). Isolation and identification of drugs in pharmaceuticals, body fluids and post-mortem material. London: Pharmaceutical press.

Chicago

Berle, Judith ed., and E. G. C Clarke ed. Isolation and Identification of Drugs In Pharmaceuticals, Body Fluids and Post-Mortem Material. London: Pharmaceutical press, 1969.