Gaya APA

Richards, J, C., Farell, T, S. (2012). Professional Development for Language Teachers : Strategies for Teacher Learning (Cet.6). USA: Cambridge University Press.

Gaya MLA

Richards, Jack, C., Farell, Thomas, S.C. "Professional Development for Language Teachers : Strategies for Teacher Learning". Cet.6 USA: Cambridge University Press, 2012. Text.