Brabb , G. J., & Gerald W. McKean. (1982). Instructor's Manual: Business Data Processing. Houghton Mifflin Company.
Lua i Stíl Chicago (17ú heag.)Brabb , George J., agus Gerald W. McKean. Instructor's Manual: Business Data Processing. USA: Houghton Mifflin Company, 1982.
Lua MLA (9ú heag.)Brabb , George J., agus Gerald W. McKean. Instructor's Manual: Business Data Processing. Houghton Mifflin Company, 1982.
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