Gaya APA

L.Williams, E., P. et al. (2000). Principles of toxicology : environmental and industrial application (2). San Fransisco: John Wilwey & Sons.

Gaya MLA

L.Williams, E., P. et al.. Principles of toxicology : environmental and industrial application. 2 San Fransisco: John Wilwey & Sons, 2000. Text.