Richards, J., Hull, J. Interchange. Cambridge: Cambridge Univ. Press, 1990 184 p. 0-521-35989-9.
Richards, J., Hull, J. Interchange. Cambridge: Cambridge Univ. Press, 1990 184 p. 0-521-35989-9.
Richards, J., Hull, J. (1990) Interchange, Cambridge: Cambridge Univ. Press 184 p. 0-521-35989-9.
Richards, J., & Hull, J. (1990). Interchange. English for International Communication Teacher's manual 1. Cambridge: Cambridge Univ. Press, 184 p.
Richards J, Hull J. Interchange: English for International Communication Teacher's manual 1. Cambridge: Cambridge Univ. Press; 1990. p. 184 p. ISBN: 0-521-35989-9.
