Gaya APA

Kenneth, B, S., B, A, B. (2008). Research design and methods a process approach/ Bordens S Kenneth Et.All . New York: Mcgrawhill.

Gaya MLA

Kenneth, Bordens, S., B, Abbott, Bruce. "Research design and methods a process approach/ Bordens S Kenneth Et.All". New York: Mcgrawhill, 2008. Text.