एपीए उद्धरण

Jack C. Richards. (1998). Passages 1: An upper-level multi-skills course (student's book). Cambridge, UK: Cambridge Univ. Press.

शिकागो स्टाइल उद्धरण

Jack C. Richards. Passages 1: An Upper-level Multi-skills Course (student's Book). Cambridge, UK: Cambridge Univ. Press, 1998.

एमएलए उद्धरण

Jack C. Richards. Passages 1: An Upper-level Multi-skills Course (student's Book). Cambridge, UK: Cambridge Univ. Press, 1998.