University of Minnesota. Bureau of Institutional Research, ebrary, Inc, Eckert, R. E., & Keller, R. J. (1954). A university looks at its program: The report of the University of Minnesota Bureau of Institutional Research, 1942-1952. University of Minnesota Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিUniversity of Minnesota. Bureau of Institutional Research, Inc ebrary, Ruth Elizabeth Eckert, এবং Robert J. Keller. A University Looks at Its Program: The Report of the University of Minnesota Bureau of Institutional Research, 1942-1952. Minneapolis: University of Minnesota Press, 1954.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিUniversity of Minnesota. Bureau of Institutional Research, et al. A University Looks at Its Program: The Report of the University of Minnesota Bureau of Institutional Research, 1942-1952. University of Minnesota Press, 1954.