Gaya APA

Bogdan, R, C., Biklen, S, K. (1992). Qualitative research for education : an introduction to theory and methods (2nd ed). Needham Heights, MA: Allyn and Bacon.

Gaya MLA

Bogdan, Robert, C.., Biklen, Sari, Knopp. "Qualitative research for education : an introduction to theory and methods". 2nd ed Needham Heights, MA: Allyn and Bacon, 1992. Text.