Gaya APA
Swales, J, M., Feak, C, B. (2012).
Academic Writing for Graduate Students Essential Tasks and Skills .
Amerika:
The Univerty of Michigan.
Gaya MLA
Swales, John, M.., Feak, Chistine, B.
"Academic Writing for Graduate Students Essential Tasks and Skills".
Amerika:
The Univerty of Michigan,
2012.
Text.