एपीए उद्धरण

Keller, D. P. (1987). Interactions I: A speaking activities book. United States: Macmillan Pub Co.

शिकागो स्टाइल उद्धरण

Keller, Deborah Poole. Interactions I: A Speaking Activities Book. United States: Macmillan Pub Co, 1987.

एमएलए उद्धरण

Keller, Deborah Poole. Interactions I: A Speaking Activities Book. United States: Macmillan Pub Co, 1987.