Gaya APA

Lacy, C, F. (2011). Drug Information Handbook : With International Trade Names Index 20th Edition Jilid 1 (Edisi 20). United States: American Pharmaceutical Association.

Gaya MLA

Lacy, Charles, F.. "Drug Information Handbook : With International Trade Names Index 20th Edition Jilid 1". Edisi 20 United States: American Pharmaceutical Association, 2011. Text.