एपीए उद्धरण

O'Dell, F. (2002). Objective CAE: Self-study. Cambridge: Cambridge University Press.

शिकागो स्टाइल उद्धरण

O'Dell, Felicity. Objective CAE: Self-study. Cambridge: Cambridge University Press, 2002.

एमएलए उद्धरण

O'Dell, Felicity. Objective CAE: Self-study. Cambridge: Cambridge University Press, 2002.