Gale Research, Inc. (1989). Directories in print (6th ed.). Gale Research.
Chicago Style (17th ed.) CitationGale Research, Inc. Directories in Print. 6th ed. Detroit, Mich: Gale Research, 1989.
ציטוט MLAGale Research, Inc. Directories in Print. 6th ed. Gale Research, 1989.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.