Chong, P. P. (1978). An analysis of the pre-university integrated physical science curriculum in terms of its relevance to first year science oriented courses at the University of Singapore.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Chong, Paul Philip. An Analysis of the Pre-university Integrated Physical Science Curriculum in Terms of Its Relevance to First Year Science Oriented Courses at the University of Singapore. 1978.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Chong, Paul Philip. An Analysis of the Pre-university Integrated Physical Science Curriculum in Terms of Its Relevance to First Year Science Oriented Courses at the University of Singapore. 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.