APA (7th ed.) Citation

(1989). Directories in print (6th ed.). Gale Research.

Chicago Style (17th ed.) Citation

Directories in Print. 6th ed. Detroit: Gale Research, 1989.

MLA (9th ed.) Citation

Directories in Print. 6th ed. Gale Research, 1989.

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