APA (7th ed.) Citation

(1989). U.S. medical directory (8th ed.). U.S. Directory Service.

Chicago Style (17th ed.) Citation

U.S. Medical Directory. 8th ed. Miami, Fla.: U.S. Directory Service, 1989.

MLA (8th ed.) Citation

U.S. Medical Directory. 8th ed. U.S. Directory Service, 1989.

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