Cita APA

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

Chicago Style Citation

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

Cita MLA

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

Atenció: Aquestes cites poden no estar 100% correctes.