Gaya APA

Cohen, J, L., Till, A. (2000). US. Pharmacopeia 24 National Formulary 19 Supplenment vol.2 (Volume 2). Washington: United States Pharmacopeial Convention.

Gaya MLA

Cohen, Jordan, L.., Till, Alice. "US. Pharmacopeia 24 National Formulary 19 Supplenment vol.2". Volume 2 Washington: United States Pharmacopeial Convention, 2000. Text.