Changes : English for international communication 1 : student's book /
Jack C. Richards ; with Jonathan Hull and Susan Proctor
- Cambridge : Cambridge University Press, 1994.
- 144 p. ; 30 cm.
Includes 3 sound cassettes ; student cassette (54 min.) Units 1-15. - Class cassette A (64 min.) Units 1-8. - Class cassette B (72 min.) Units 9-15
Accompanied by : Changes : English for international communication 1: teacher's book / Jack C. Richards ; with Jonathan Hull and Susan Proctor (160 p. ; 30 cm.) , 1994. ISBN 0521449359 Changes : English for international communication 1: workbook / Jack C. Richards ; with Jonathan Hull and Susan Proctor (87 p. ; 30 cm.), 1994. ISBN 0521449324