APA-viite (7. p.)

Gale Group, Gale Research Company, & Thomson Gale (Firm). (1987). Government research directory (4th ed.). Gale Research Co.

Chicago-viite (17. p.)

Gale Group, Gale Research Company, ja Thomson Gale (Firm). Government Research Directory. 4th ed. Detroit, Mich: Gale Research Co, 1987.

MLA-viite (9. p.)

Gale Group, et al. Government Research Directory. 4th ed. Gale Research Co, 1987.