Gaya APA

K., B, R, C, B, S. (2007). QUALITATIVE RESEARCH FOR EDUCATION AN INTRODUCTION TO THEORIES AND METHODS (ED 5.). Boston: PEARSON EDUCATION.

Gaya MLA

K., BOGDAN, ROBERT, C.,, BIKLEN, SARI. "QUALITATIVE RESEARCH FOR EDUCATION AN INTRODUCTION TO THEORIES AND METHODS". ED 5. Boston: PEARSON EDUCATION, 2007. Text.