APA استشهاد

Howell, K. E. (2013). An introduction to the philosophy of methodology. Sage.

استشهاد بنمط شيكاغو

Howell, Kerry E. An Introduction to the Philosophy of Methodology. Los Angeles: Sage, 2013.

MLA استشهاد

Howell, Kerry E. An Introduction to the Philosophy of Methodology. Sage, 2013.