APA (7th ed.) Citation

Gale Research Inc. (1993). Gale directory of databases. Gale Research.

Chicago Style (17th ed.) Citation

Gale Research Inc. Gale Directory of Databases. Detroit (Gale Research, Inc., 835 Penobscot Bldg., Detroit, MI 48226): Gale Research, 1993.

MLA (9th ed.) Citation

Gale Research Inc. Gale Directory of Databases. Gale Research, 1993.