एपीए उद्धरण

Leo Jones. (1997). New progress to first certificate student's book. Cambridge Univ. Press.

शिकागो स्टाइल उद्धरण

Leo Jones. New Progress to First Certificate Student's Book. Cambridge Univ. Press, 1997.

एमएलए उद्धरण

Leo Jones. New Progress to First Certificate Student's Book. Cambridge Univ. Press, 1997.