Gaya APA

Lacy, C, F. et al (2012). Drug Information Handbook with international trade names index Book 1 2011-2012 (Ed. 20). American: Lexicomp Apha.

Gaya MLA

Lacy, Charles, F.. et al. "Drug Information Handbook with international trade names index Book 1 2011-2012". Ed. 20 American: Lexicomp Apha, 2012. Text.