Rudder, C. A. (2006). Problem solving: Case studies investigating the strategies used by secondary American and Singaporean students. The Florida State University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rudder, Carla Amoi. Problem Solving: Case Studies Investigating the Strategies Used by Secondary American and Singaporean Students. Florida: The Florida State University, 2006.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Rudder, Carla Amoi. Problem Solving: Case Studies Investigating the Strategies Used by Secondary American and Singaporean Students. The Florida State University, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.