Vries, L. A. d. (1978). A procedure for developing purposes for a national curriculum in physical education for Malaysian schools. University Microfilms.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Vries, Leonard Andrew de. A Procedure for Developing Purposes for a National Curriculum in Physical Education for Malaysian Schools. Ann Arbor, Mich.: University Microfilms, 1978.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Vries, Leonard Andrew de. A Procedure for Developing Purposes for a National Curriculum in Physical Education for Malaysian Schools. University Microfilms, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.