Gaya APA

swan, M, &, S, B. (). Lerner English a Teacher Guide to Interference And Other Problems (Cet.1). [s.i.]: Cambridge University Press.

Gaya MLA

swan, Michael, &, Smith,, Bernard. "Lerner English a Teacher Guide to Interference And Other Problems". Cet.1 [s.i.]: Cambridge University Press, . Text.