Gaya APA

Creswell, J, W. (2007). Qualitative Inquiry and Research Design Choosing among Five Approaches (Cetakan. Kedua). California: Sage Publication Inc..

Gaya MLA

Creswell, John, W.. "Qualitative Inquiry and Research Design Choosing among Five Approaches". Cetakan. Kedua California: Sage Publication Inc., 2007. E-Book.