Skipper, M. (2002). Advanced grammar & vocabulary: Student's book. Express Publishing.
Chicago Style (17th ed.) CitationSkipper, Mark. Advanced Grammar & Vocabulary: Student's Book. Berkshire: Express Publishing, 2002.
MLA (9th ed.) CitationSkipper, Mark. Advanced Grammar & Vocabulary: Student's Book. Express Publishing, 2002.
Warning: These citations may not always be 100% accurate.