O'Connell S. Sue. (2000). Proficiency: Teacher's Book. Longman, 2000.
Chicago Style (17th ed.) CitationO'Connell S. Sue. Proficiency: Teacher's Book. Longman, 2000, 2000.
MLA (9th ed.) CitationO'Connell S. Sue. Proficiency: Teacher's Book. Longman, 2000, 2000.
Warning: These citations may not always be 100% accurate.