توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Sofiah Zainal Abidin. (2000). The maternal risk factors of low birth weight infants in Daerah Timur-Laut, Pulau Pinang from August 1998 through September 1999. Universiti Kebangsaan Malaysia.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Sofiah Zainal Abidin. The Maternal Risk Factors of Low Birth Weight Infants in Daerah Timur-Laut, Pulau Pinang from August 1998 Through September 1999. Kuala Lumpur: Universiti Kebangsaan Malaysia, 2000.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Sofiah Zainal Abidin. The Maternal Risk Factors of Low Birth Weight Infants in Daerah Timur-Laut, Pulau Pinang from August 1998 Through September 1999. Universiti Kebangsaan Malaysia, 2000.