Gaya APA
Neuman, W, L. (2006).
Social Research Methods : Qualitative and Quantitative Approachs 6'th Ed. (6).
Boston:
Pearson Education.
Gaya MLA
Neuman, W., Lawrence.
"Social Research Methods : Qualitative and Quantitative Approachs 6'th Ed.".
6
Boston:
Pearson Education,
2006.
Text.