Elangkovan Ramakrishnan. (1995). The association between physical exertion during pregnancy and premature delivery in Malaysian women. Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Elangkovan Ramakrishnan. The Association Between Physical Exertion During Pregnancy and Premature Delivery in Malaysian Women. Kuala Lumpur: Universiti Kebangsaan Malaysia, 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Elangkovan Ramakrishnan. The Association Between Physical Exertion During Pregnancy and Premature Delivery in Malaysian Women. Universiti Kebangsaan Malaysia, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.