Kong, S. Y. (2014). The physical environment as a three-dimensional textbook for environmental education in Malaysian primary schools.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kong, Seng Yeap. The Physical Environment as a Three-dimensional Textbook for Environmental Education in Malaysian Primary Schools. 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Kong, Seng Yeap. The Physical Environment as a Three-dimensional Textbook for Environmental Education in Malaysian Primary Schools. 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.