Hassenkam, H. (1969) “Tore Thonstad : Education and manpower. Theoretical models and empirical applications. London: Oliver & Boyd, 1969. 162 pp. Pris: 63 s”., Nationaløkonomisk Tidsskrift, 107. Tilgængelig hos: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/61417 (Set: 5 december 2025).