APA aipamena

Geffner, A. B. (1991). Business letters the Easy Way. Paris: Hermes*.

Chicago Style aipamena

Geffner, Andrea B. Business Letters the Easy Way. Paris: Hermes*, 1991.

MLA aipamena

Geffner, Andrea B. Business Letters the Easy Way. Paris: Hermes*, 1991.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.