APA Style

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

MLA Style

Creswell, John, W., Poth, Cheryl, N.. "Qualitative inquiry & research design : choosing among five approaches". 4th ed. : SAGE Publications, 2018. Books.