APA

Schiefer H. B., Irvine D. G. & Busik S. C. (1997). Understanding toxicology: chemicals, their benefits and risks. Boca Raton, FL: CRC Press.

Chicago

Schiefer H Bruno, Irvine Donald G and Busik Shirley C. 1997. Understanding toxicology: chemicals, their benefits and risks. Boca Raton, FL: CRC Press.

Harvard

Schiefer H. B., Irvine D. G. and Busik S. C. (1997). Understanding toxicology: chemicals, their benefits and risks. Boca Raton, FL: CRC Press.

MLA

Schiefer H Bruno, Irvine Donald G and Busik Shirley C. Understanding toxicology: chemicals, their benefits and risks. Boca Raton, FL: CRC Press. 1997.