APA (7th ed.) Citation

United States. Animal and Plant Health Inspection Service. (2008). National Animal Health Surveillance System (Rev. Nov. 2008.). USDA, APHIS.

Chicago Style (17th ed.) Citation

United States. Animal and Plant Health Inspection Service. National Animal Health Surveillance System. Rev. Nov. 2008. [Fort Collins, Colo.]: USDA, APHIS, 2008.

MLA (9th ed.) Citation

United States. Animal and Plant Health Inspection Service. National Animal Health Surveillance System. Rev. Nov. 2008. USDA, APHIS, 2008.