توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Riyadh Azzawi Badr. (2014). Tribological characteristics and analysis of modified A383 and A390 alloys. School of Mechatronic Engineering, Universiti Malaysia Perlis.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Riyadh Azzawi Badr. Tribological Characteristics and Analysis of Modified A383 and A390 Alloys. Perlis, Malaysia: School of Mechatronic Engineering, Universiti Malaysia Perlis, 2014.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Riyadh Azzawi Badr. Tribological Characteristics and Analysis of Modified A383 and A390 Alloys. School of Mechatronic Engineering, Universiti Malaysia Perlis, 2014.