North Atlantic Treaty Organization. Scientific Affairs Division., & Smith, A. R. (1970). Models of manpower systems: The proceedings of a conference held at Oporto in September 1969, under the aegis of the NATO Scientific Affairs Division. London: English Universities Press.
Παραπομπή Chicago StyleNorth Atlantic Treaty Organization. Scientific Affairs Division., and Anthony Robert Smith. Models of Manpower Systems: The Proceedings of a Conference Held At Oporto in September 1969, Under the Aegis of the NATO Scientific Affairs Division. London: English Universities Press, 1970.
Παραπομπή MLANorth Atlantic Treaty Organization. Scientific Affairs Division., and Anthony Robert Smith. Models of Manpower Systems: The Proceedings of a Conference Held At Oporto in September 1969, Under the Aegis of the NATO Scientific Affairs Division. London: English Universities Press, 1970.