Gaya APA

Pharmacpeia, U. (-). The Official Compendia of Standards USP26 NF21 Ed.2 (Ed.2). U.S.A: U.S. Pharmacpeia.

Gaya MLA

Pharmacpeia, U.S. "The Official Compendia of Standards USP26 NF21 Ed.2". Ed.2 U.S.A: U.S. Pharmacpeia, -. Text.