APA (7th ed.) Citation

Philip Lief Group. (1989). The national fax directory 1990.: How to contact 80,000 major fax users in USA. Gale Research.

Chicago Style (17th ed.) Citation

Philip Lief Group. The National Fax Directory 1990.: How to Contact 80,000 Major Fax Users in USA. Washington, D C.: Gale Research, 1989.

MLA (9th ed.) Citation

Philip Lief Group. The National Fax Directory 1990.: How to Contact 80,000 Major Fax Users in USA. Gale Research, 1989.