एपीए उद्धरण

ADRIAN DOFF. (1997). Language in use Upper - intermediate (0 521 55550 7). Cambridge.

शिकागो स्टाइल उद्धरण

ADRIAN DOFF. Language in Use Upper - Intermediate (0 521 55550 7). Cambridge, 1997.

एमएलए उद्धरण

ADRIAN DOFF. Language in Use Upper - Intermediate (0 521 55550 7). Cambridge, 1997.