1. According to Mark IV Time 64 (1954) 68–69.
2. Bachman, H., and W.A. Slaby (1977). Computer-Konkordanze zum Novum Testamentum von Nestle-Atland, 26 (Walter de Gruyter, Berlin and New York).
3. Bessinger, J.B., Jr. (1961). Computer techniques for an Old English concordance, American Documentation 12, 227–229.
4. Bessinger, J.B., Jr. (1965). Literary Data Processing Conference Proceedings, Sep. 9–11, 1964, Eds., J.B. Bessinger, S.M. Parrish and H.F. Arader (The Modern Language Association Materials Center, New York).
5. Bessinger, J.B., Jr. (1969). A Concordance to “Beowulf” (Cornell University Press, Ithaca).