Lua APA (7ú heag.)

Darnay, B. T. (1997). Consultants and consulting organizations directory. Gale Research.

Lua i Stíl Chicago (17ú heag.)

Darnay, Brigitte T. Consultants and Consulting Organizations Directory. Detroit, Mich: Gale Research, 1997.

Lua MLA (9ú heag.)

Darnay, Brigitte T. Consultants and Consulting Organizations Directory. Gale Research, 1997.

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