APA (7th ed.) Citation

American Map Corporation. (1990). The original cleartype United States zip code atlas (Rev. and updated.). American Map Corp..

Chicago Style (17th ed.) Citation

American Map Corporation. The Original Cleartype United States Zip Code Atlas. Rev. and updated. Maspeth, NY: American Map Corp., 1990.

MLA (9th ed.) Citation

American Map Corporation. The Original Cleartype United States Zip Code Atlas. Rev. and updated. American Map Corp., 1990.