एपीए उद्धरण

Harmer, J. (1991). The practice of english language teaching. London: Longman.

शिकागो स्टाइल उद्धरण

Harmer, Jeremy. The Practice of English Language Teaching. London: Longman, 1991.

एमएलए उद्धरण

Harmer, Jeremy. The Practice of English Language Teaching. London: Longman, 1991.