Walker E. Elaine & Elsworth S. Steve. (2002). New Grammar Practice for Pre-Intermediate Students with key (3-rd ed.). Longman, 2002.
Chicago Style (17th ed.) CitationWalker E. Elaine and Elsworth S. Steve. New Grammar Practice for Pre-Intermediate Students with Key. 3-rd ed. Longman, 2002, 2002.
MLA (9th ed.) CitationWalker E. Elaine and Elsworth S. Steve. New Grammar Practice for Pre-Intermediate Students with Key. 3-rd ed. Longman, 2002, 2002.
Warning: These citations may not always be 100% accurate.