O'SULLIVAN, D; SWAN, M; WALTER, C. 1993. The New Cambridge English Course: Practice 4 + Key Upper-Intermediate. Cambridge: Cambridge University Press.
APA (7th ed.) CitationO'Sullivan, D., Swan, M., & Walter, C. (1993). The New Cambridge English Course: Practice 4 + Key Upper-Intermediate. Cambridge University Press.
Chicago Style (17th ed.) CitationO'Sullivan, Desmond, Michael Swan, and Catherine Walter. The New Cambridge English Course: Practice 4 + Key Upper-Intermediate. Cambridge: Cambridge University Press, 1993.
MLA (9th ed.) CitationO'Sullivan, Desmond, et al. The New Cambridge English Course: Practice 4 + Key Upper-Intermediate. Cambridge University Press, 1993.
Warning: These citations may not always be 100% accurate.
