Al-Raegi, A. H., & Trowbridge, L. (1981). A study of the predictive validity of twelfth grade transcript data on freshman college GPA for science majors, colleges of education, Saudi Arabia. University of Northern Colorado.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Raegi, Abdullateef Hamid, و Leslie Trowbridge. A Study of the Predictive Validity of Twelfth Grade Transcript Data on Freshman College GPA for Science Majors, Colleges of Education, Saudi Arabia. Colorado: University of Northern Colorado, 1981.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Raegi, Abdullateef Hamid, و Leslie Trowbridge. A Study of the Predictive Validity of Twelfth Grade Transcript Data on Freshman College GPA for Science Majors, Colleges of Education, Saudi Arabia. University of Northern Colorado, 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.