APA

Estados Unidos da América. United States Pharmacopeial Convention, . (2005). USP 28. NF 23. Rockville: United States Pharmacopeia Convention.

Chicago

Estados Unidos da América. United States Pharmacopeial Convention, . 2005. USP 28. NF 23. Rockville: United States Pharmacopeia Convention.

Harvard

Estados Unidos da América. United States Pharmacopeial Convention, . (2005). USP 28. NF 23. Rockville: United States Pharmacopeia Convention.

MLA

Estados Unidos da América. United States Pharmacopeial Convention, . USP 28. NF 23. Rockville: United States Pharmacopeia Convention. 2005.