Gaya APA

Winkler, A, C., Mccuen, J, R. (1989). Writing research paper : a handbook . San Diego: Harcourt Brace Jovanovich Pub..

Gaya MLA

Winkler, Anthony, C.., Mccuen, Jo, Ray. "Writing research paper : a handbook". San Diego: Harcourt Brace Jovanovich Pub., 1989. Text.