Gaya APA

Lacy, C, F. et al (2011). Drug Information Handbook : with International Trade Names Index, Book 1 (Ed. 20). United States of America: Lexicomp.

Gaya MLA

Lacy, Charles, F.. et al. "Drug Information Handbook : with International Trade Names Index, Book 1". Ed. 20 United States of America: Lexicomp, 2011. Text.