JOHNSEN, E. 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, [S. l.], v. 28, 1964. Disponível em: https://tidsskrift.dk/ledelseogerhvervsoekonomi/article/view/34198. Acesso em: 5 jan. 2025.