Gratton, C., & Jones, I. (2010). Research methods for sports studies (2nd ed.). London: Routledge.
استشهاد بنمط شيكاغوGratton, Chris, and Ian Jones. Research Methods for Sports Studies. 2nd ed. London: Routledge, 2010.
MLA استشهادGratton, Chris, and Ian Jones. Research Methods for Sports Studies. 2nd ed. London: Routledge, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.