एपीए उद्धरण

Leo Jones. (2002). New progress to proficiency (self-study student's book). Cambridge: Cambridge Univ. Press.

शिकागो स्टाइल उद्धरण

Leo Jones. New Progress to Proficiency (self-study Student's Book). Cambridge: Cambridge Univ. Press, 2002.

एमएलए उद्धरण

Leo Jones. New Progress to Proficiency (self-study Student's Book). Cambridge: Cambridge Univ. Press, 2002.