APA

The United States Pharmacopeial Convention, . (2007). USP 30. NF 25. Rockville: United States Pharmacopeial Convention.

Chicago

The United States Pharmacopeial Convention, . 2007. USP 30. NF 25. Rockville: United States Pharmacopeial Convention.

Harvard

The United States Pharmacopeial Convention, . (2007). USP 30. NF 25. Rockville: United States Pharmacopeial Convention.

MLA

The United States Pharmacopeial Convention, . USP 30. NF 25. Rockville: United States Pharmacopeial Convention. 2007.