Crew, M. A., & Young, A. (1977). Paying by degrees: A study of the financing of higher education students by grants, loans, and vouchers. Institute of Economic Affairs.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Crew, Michael A., و Alistair Young. Paying by Degrees: A Study of the Financing of Higher Education Students by Grants, Loans, and Vouchers. [London]: Institute of Economic Affairs, 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Crew, Michael A., و Alistair Young. Paying by Degrees: A Study of the Financing of Higher Education Students by Grants, Loans, and Vouchers. Institute of Economic Affairs, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.