Research and Education Association & Uhland, W. (1991). The best test preparation for the College Board achievement test in chemistry. Research & Education Association.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Research and Education Association و William Uhland. The Best Test Preparation for the College Board Achievement Test in Chemistry. Piscataway, N.J.: Research & Education Association, 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Research and Education Association و William Uhland. The Best Test Preparation for the College Board Achievement Test in Chemistry. Research & Education Association, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.