JOHNSEN, E. Powell Niland, Management Problems in the Acquisition of Special Automatic Equipment, Division of Research Graduate School of Business Administration, Harvard University, Boston, 1961, 336 s., dollars 5.00. Ledelse og Erhvervsøkonomi, [S. l.], v. 28, 1964. Disponível em: https://tidsskrift.dk/ledelseogerhvervsoekonomi/article/view/34182. Acesso em: 5 jan. 2025.