Gaya APA

Ridenour, I, N, C, R, B, C, S. (1998). Qualitative-quantitative Research Methodology . : SIU Press.

Gaya MLA

Ridenour, Isadore, Newman;, Carolyn, R., Benz;, Carolyn, S.. "Qualitative-quantitative Research Methodology". : SIU Press, 1998. Text.