एपीए उद्धरण

Jeremy Comford. (1998). Effective telephoning (Teacher's book). Oxford: Oxford Univ. Press.

शिकागो स्टाइल उद्धरण

Jeremy Comford. Effective Telephoning (Teacher's Book). Oxford: Oxford Univ. Press, 1998.

एमएलए उद्धरण

Jeremy Comford. Effective Telephoning (Teacher's Book). Oxford: Oxford Univ. Press, 1998.