Isarji Sarudin. (1994). An investigation of the relationship between English language proficiency and academic performance of Malaysian students in the State University of New York at Buffalo/Institut Teknologi MARA Program. State University of New York at Buffalo.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Isarji Sarudin. An Investigation of the Relationship Between English Language Proficiency and Academic Performance of Malaysian Students in the State University of New York at Buffalo/Institut Teknologi MARA Program. Amherst, N.Y.: State University of New York at Buffalo, 1994.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Isarji Sarudin. An Investigation of the Relationship Between English Language Proficiency and Academic Performance of Malaysian Students in the State University of New York at Buffalo/Institut Teknologi MARA Program. State University of New York at Buffalo, 1994.