APA (7th ed.) Zitazioa
Whitcomb, A. (1983). Comprehensive office practice. Thomas Nelson.
Chicago Style (17th ed.) Zitazioa
Whitcomb, Alan. Comprehensive Office Practice. Edinburg: Thomas Nelson, 1983.
MLA (9th ed.) Zitazioa
Whitcomb, Alan. Comprehensive Office Practice. Thomas Nelson, 1983.
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