Gaya APA

Dudley, T., John, M, J, S. (1998). Developments in English for Specific Purposes: A multi disciplinary approach . United Kingdom: Cambridge University Press.

Gaya MLA

Dudley, Tony., John, Maggie, Jo, St. "Developments in English for Specific Purposes: A multi disciplinary approach". United Kingdom: Cambridge University Press, 1998. Text.