Callahan, R. B. (2014). Private college enrollment in the Midwest: An exploration of significant growth within a 10-year period : submitted to Northcentral University in partial fulfillment of the requirements for the degree of Doctor of Philosophy. ProQuest.
Chicago-referens (17:e uppl.)Callahan, Robert B. Private College Enrollment in the Midwest: An Exploration of Significant Growth Within a 10-year Period : Submitted to Northcentral University in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy. Ann Arbor, MI: ProQuest, 2014.
MLA-referens (8:e uppl.)Callahan, Robert B. Private College Enrollment in the Midwest: An Exploration of Significant Growth Within a 10-year Period : Submitted to Northcentral University in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy. ProQuest, 2014.