APA-viite (7. p.)

Gale Group, Gale Research Company, & Thomson Gale (Firm). (1989). Government research directory (5th ed.). Gale Research Co.

Chicago-viite (17. p.)

Gale Group, Gale Research Company, ja Thomson Gale (Firm). Government Research Directory. 5th ed. Detroit, Mich: Gale Research Co, 1989.

MLA-viite (9. p.)

Gale Group, et al. Government Research Directory. 5th ed. Gale Research Co, 1989.