Michael Harris, D. M. (2002). Opportunities: Upper Intermediate (Language Powerbook). Longman, Pearson Education Limited.
Chicago Style CitationMichael Harris, David Mower. Opportunities: Upper Intermediate (Language Powerbook). Longman, Pearson Education Limited, 2002.
MLA CitationMichael Harris, David Mower. Opportunities: Upper Intermediate (Language Powerbook). Longman, Pearson Education Limited, 2002.
Warning: These citations may not always be 100% accurate.