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.