Gaya APA
winkler, A, C, M, J, R. (2012).
Writing the Research Paper: A Handbook (Eighth Edition) .
Boston:
wadsworth.
Gaya MLA
winkler, Anthony, C.;, Metherell,, Jo, Ray.
"Writing the Research Paper: A Handbook (Eighth Edition)".
Boston:
wadsworth,
2012.
Text.