Ashley, A. (2010). Oxford hanhdbook of commercial correspondence. Oxford: Oxford University press.
Chicago Style aipamenaAshley, A. Oxford Hanhdbook of Commercial Correspondence. Oxford: Oxford University press, 2010.
MLA aipamenaAshley, A. Oxford Hanhdbook of Commercial Correspondence. Oxford: Oxford University press, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.