APA Style

Creswell, J, W., Poth, C, N. (2018). Qualitative inquiry & research design: choosing among five approaches (4th Ed). cau: Sage Publications.

MLA Style

Creswell, John, W.., Poth, Cheryl, N.. "Qualitative inquiry & research design: choosing among five approaches". 4th Ed cau: Sage Publications, 2018. PDF.