Johnsen, E. (1964) “Ralph M. Hower, Charles D. Orth 3rd, Managers and Scientists, Division of Research, Graduate School of Business Administration Harvard University, Boston, 1963, 323 s”., Ledelse og Erhvervsøkonomi, 28. Tilgængelig hos: https://tidsskrift.dk/ledelseogerhvervsoekonomi/article/view/34198 (Set: 6 december 2025).