एपीए उद्धरण

Ashley, A. (1984). Handbook of commercial correspondence. Oxford University Press.

शिकागो स्टाइल उद्धरण

Ashley, A. Handbook of Commercial Correspondence. Oxford University Press, 1984.

एमएलए उद्धरण

Ashley, A. Handbook of Commercial Correspondence. Oxford University Press, 1984.