Gaya APA

Bogdan, R, C., Biklen, S, K. (2007). Qualitative Research For Education (Ke-5). United States of America: Pearson.

Gaya MLA

Bogdan, Robert, C.., Biklen, Sari, Knopp. "Qualitative Research For Education". Ke-5 United States of America: Pearson, 2007. Text.