Daud, R. (2019). The enhancement of gamification leader board model based on player type to increase learning engagement.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Daud, Rafizah. The Enhancement of Gamification Leader Board Model Based on Player Type to Increase Learning Engagement. 2019.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Daud, Rafizah. The Enhancement of Gamification Leader Board Model Based on Player Type to Increase Learning Engagement. 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.