Hirsch, Gary, Edward B. Roberts and Gilbert Levin. In Substance Abuse in the United States, 109-125. Baltimore, MD: Williams & Wilkins Company, 1981.
Edward B. Roberts and S. Pathak.
Stearns, N., T.A. Bergan, Edward B. Roberts and L. Cavazos. Journal of Medical Education Vol. 53, (1978): 464-472.
Roberts, Edward B., Dan I. Abrams and Henry B. Weil. Management Science Vol. 14, No. 12 (1968): B674-B694.
Roberts, Edward B., Jack Homer, Armen Kasabian and Michael Varrell. International Journal of Bio-Medical Computing Vol. 13, No. 1 (1982): 69-86.
Levin, Gilbert and Edward B. Roberts. In Analysis of Dynamic Psychological Systems, Volume 2: Methods and Applications, 263-301. New York: Plenum Press, 1992.