APA ציטוט

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

Chicago Style (17th ed.) Citation

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

ציטוט MLA

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