एपीए उद्धरण

Helgesen, M. (2007). Practical English language teaching: Listening. New York: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Helgesen, Marc. Practical English Language Teaching: Listening. New York: McGraw-Hill, 2007.

एमएलए उद्धरण

Helgesen, Marc. Practical English Language Teaching: Listening. New York: McGraw-Hill, 2007.