Gaya APA

Bogdan, R, C., Biklen, S, K. (1982). Qualitative research for education: an introduction to theory and methods . Boston: Allyn and Bacon, Inc.

Gaya MLA

Bogdan, Robert, C.., Biklen, Sari, Knopp. "Qualitative research for education: an introduction to theory and methods". Boston: Allyn and Bacon, Inc, 1982. Text.