sachse, e. (1962). some experience and problems of manpower planning. the institute of national planning.
Chicago-viite (17. p.)sachse, e. Some Experience and Problems of Manpower Planning. cairo: the institute of national planning, 1962.
MLA-viite (9. p.)sachse, e. Some Experience and Problems of Manpower Planning. the institute of national planning, 1962.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.