Penrose, E. (1968). A Note on Development Planning and The Role of The Enterprise. The Institute of National Planning.
Chicago-referens (17:e uppl.)Penrose, E. A Note on Development Planning and The Role of The Enterprise. Cairo: The Institute of National Planning, 1968.
MLA-referens (9:e uppl.)Penrose, E. A Note on Development Planning and The Role of The Enterprise. The Institute of National Planning, 1968.
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