APA(7版)引用形式

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

Chicagoスタイル(17版)引用形式

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

MLA(9版)引用形式

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