Wilson, W., & Barnard, R. (1998). Fifty-Fifty: A basic course in communicative English (2nd edition.). Prentice Hall ELT.
Chicago Style (17th ed.) CitationWilson, Warren, and Roger Barnard. Fifty-Fifty: A Basic Course in Communicative English. 2nd edition. Singapore: Prentice Hall ELT, 1998.
MLA (9th ed.) CitationWilson, Warren, and Roger Barnard. Fifty-Fifty: A Basic Course in Communicative English. 2nd edition. Prentice Hall ELT, 1998.
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