APA استشهاد

O'Leary, Z. (2017). Essential guide to doing your research project (3rd ed.). Sage.

استشهاد بنمط شيكاغو

O'Leary, Zina. Essential Guide to Doing Your Research Project. 3rd ed. Los Angeles: Sage, 2017.

MLA استشهاد

O'Leary, Zina. Essential Guide to Doing Your Research Project. 3rd ed. Sage, 2017.