Harmer, J., & Arnold, J. (1985). Advanced speaking skills. Eurocentre : Longman.
Chicago Style (17th ed.) CitationHarmer, Jeremy, and John Arnold. Advanced Speaking Skills. Harlow: Eurocentre : Longman, 1985.
MLA (9th ed.) CitationHarmer, Jeremy, and John Arnold. Advanced Speaking Skills. Eurocentre : Longman, 1985.