Cita APA

Jack C. Richards. (1994). Changes B (class cassette 1). Cambridge, UK: Cambridge Univ. Press.

Chicago Style Citation

Jack C. Richards. Changes B (class Cassette 1). Cambridge, UK: Cambridge Univ. Press, 1994.

Cita MLA

Jack C. Richards. Changes B (class Cassette 1). Cambridge, UK: Cambridge Univ. Press, 1994.

Atenció: Aquestes cites poden no estar 100% correctes.