Gaya APA

Pharmacopeia, T, U, S. (2003). USP 26/NF 21 Vol 2 . United States: United States Pharmacopeial Convention.

Gaya MLA

Pharmacopeia, The, United, States. "USP 26/NF 21 Vol 2". United States: United States Pharmacopeial Convention, 2003. Koleksi Cetak.