Freund, John E. (1952). Some Methods of Estimating Prior Probabilities from Heterogeneous Populations (Thesis). University of Pittsburgh.
Freund, John E. (1962). Mathematical statistics. Englewood Cliffs, N.J.: Prentice-Hall. OCLC859809293.
Miller, Irwin; Miller, Marylees; Freund, John E. (2014). John E. Freund's Mathematical Statistics with Applications (Eighth ed.). Upper Saddle River, N.J.: Pearson Education. ISBN9780134995373. OCLC1020297405.
Freund, J. E.; Simon, G. A. (1992). Modern elementary statistics (8 ed.). Englewood Cliffs, New Jersey: Prentice-Hall. ISBN9780136026990. OCLC24173724.