Bowen, H. R. (1981). Costs of higher education: How much do college and universities spend per Student and how much should they spend. Jossey- Bass.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bowen, Howard R. Costs of Higher Education: How Much Do College and Universities Spend Per Student and How Much Should They Spend. Sanfrancisco: Jossey- Bass, 1981.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Bowen, Howard R. Costs of Higher Education: How Much Do College and Universities Spend Per Student and How Much Should They Spend. Jossey- Bass, 1981.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.