APA

Guetterman T. C., . (2020). Qualitative, quantitative, and mixed methods research sampling strategies. New York, NY: Oxford University Press.

Chicago

Guetterman Timothy C, . 2020. Qualitative, quantitative, and mixed methods research sampling strategies. New York, NY: Oxford University Press.

Harvard

Guetterman T. C., . (2020). Qualitative, quantitative, and mixed methods research sampling strategies. New York, NY: Oxford University Press.

MLA

Guetterman Timothy C, . Qualitative, quantitative, and mixed methods research sampling strategies. New York, NY: Oxford University Press. 2020.