Gaya APA

R., N, I, B, C. (1998). QUALITATIVE - QUANTITATIVE RESEARCH METHODOLOGY (CET 1.). SOUTHER ILLINOIS UNIVERSITY: BOARD OF TRUESTEES.

Gaya MLA

R., NEWMAN, ISADORE,, BENZ, CAROLYN. "QUALITATIVE - QUANTITATIVE RESEARCH METHODOLOGY". CET 1. SOUTHER ILLINOIS UNIVERSITY: BOARD OF TRUESTEES, 1998. Text.