Cita APA (7th ed.)

Gale Research Company. (1977). Abbreviations dictionary (5th ed.). .Gale Research Co.

Cita Chicago (17th ed.)

Gale Research Company. Abbreviations Dictionary. 5th ed. Detroit, Mich: .Gale Research Co, 1977.

Cita MLA (9th ed.)

Gale Research Company. Abbreviations Dictionary. 5th ed. .Gale Research Co, 1977.