APA استشهاد

Andrew Whittaker. (2012). Research skills for social work (2.). Sage.

استشهاد بنمط شيكاغو

Andrew Whittaker. Research Skills for Social Work. 2. London: Sage, 2012.

MLA استشهاد

Andrew Whittaker. Research Skills for Social Work. 2. Sage, 2012.