Gaya APA

Neuman, W, L. (1994). Social Research Methods : Qualitative And Quantitative Approaches 2nd Edition (2nd Ed). America: Allyn And Bacon.

Gaya MLA

Neuman, William, Lawrence. "Social Research Methods : Qualitative And Quantitative Approaches 2nd Edition". 2nd Ed America: Allyn And Bacon, 1994. Text.