APA Style

Wilson, W, ;, B, R. (2007). Fifty-Fifty Intro : A Speaking and Listening Cource, Teacher's Edition (3rd Ed.). Hongkong: Pearson Education Asia.

MLA Style

Wilson, Warren, ;, Barnard,, Roger. "Fifty-Fifty Intro : A Speaking and Listening Cource, Teacher's Edition". 3rd Ed. Hongkong: Pearson Education Asia, 2007. BOOK.