Sulaiman Ngah Razali. (1986). Comparison of perceptions of the importance of high school chemistry among various instructors and students in the United States and Malaysia. University of Iowa.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sulaiman Ngah Razali. Comparison of Perceptions of the Importance of High School Chemistry Among Various Instructors and Students in the United States and Malaysia. Iowa City, Iowa: University of Iowa, 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sulaiman Ngah Razali. Comparison of Perceptions of the Importance of High School Chemistry Among Various Instructors and Students in the United States and Malaysia. University of Iowa, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.