APA استشهاد

Olsen, W. E. (2010). Realist methodology. Sage Publications Ltd..

استشهاد بنمط شيكاغو

Olsen, Wendy Ed. Realist Methodology. London: Sage Publications Ltd., 2010.

MLA استشهاد

Olsen, Wendy Ed. Realist Methodology. Sage Publications Ltd., 2010.