Lua APA (7ú heag.)

Deffendall, P. H., & Read, H. E. (1943). Actual business English (Rev. ed.). The Macmillan Company.

Lua i Stíl Chicago (17ú heag.)

Deffendall, Prentice Hoover, agus Harlan Eugene Read. Actual Business English. Rev. ed. New York: The Macmillan Company, 1943.

Lua MLA (8ú heag.)

Deffendall, Prentice Hoover, agus Harlan Eugene Read. Actual Business English. Rev. ed. The Macmillan Company, 1943.

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