Gaya APA

Widdowson, H, G., Howwatt, A. (2009). A history of english language teaching (2nd. Ed.). Oxford: Oxford Univeversity Press.

Gaya MLA

Widdowson, H., G.., Howwatt, A.P.R.. "A history of english language teaching". 2nd. Ed. Oxford: Oxford Univeversity Press, 2009. Text.