APA (7th ed.) Citation

U.S. Customs Service. (1999). U.S. customs today. [U.S. Customs Service].

Chicago Style (17th ed.) Citation

U.S. Customs Service. U.S. Customs Today. [Washington, D.C.]: [U.S. Customs Service], 1999.

MLA (9th ed.) Citation

U.S. Customs Service. U.S. Customs Today. [U.S. Customs Service], 1999.

Warning: These citations may not always be 100% accurate.