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1Carter V. Good (ed.). Dictionary of Education. 3rd. New York, NY: McGraw-Hill, 1959.424.
2Kenneth Zahorski. The Sabbatical Mentor. Bolton MA: Anker Publishing, 1994.5.
3Walter Crosby Eells; Ernest V Hollis. Sabbatical Leave in American Higher Education [EB/OL]. Washington, DC. US Office of Education Bulletin 17, 1962.1.
4Bai Kang; Michael T. Miller. An Overview of the Sabbatical Leave in Higher Education: A Synopsis of the Literature Base. Information Analysis, 1999.7-9.
5Frederick Rudolph. The American College and University: A History. New York: Vintage Books, 1965.402-405.
6Henry G. Bennett; Schiller Scroggs. Sabbatical Leave. The Journal of Higher Education, Vol. 3, No. 4. 1932.196-199.
7Gayle A. Brazeau and Jeanne Hawkins Van Tyle. Sabbaticals: The Key to Sharpening our Professional Skills as Educators. Scientists, and Clinicians. American Journal of Pharmaceutical Education, 2006.109.
8Howard R. Bowen; Jack H. Schuster. American Professors: A National Resource Imperiled. Oxford University Press, 1986.3-4.
9I. Leonard Stright. Sabbatical Leave: A Critique. The Journal of Higher Education, Vol.35, No.7. 1964.388-389.
10H. Jr. Daugherty. Sabbatical Leaves in Higher Education. Indiana University, Bloomington, 1979.77.
