Knauthe, H. E. (1967). Medium-term Planning of National Economy. The Institute of National Planning.
Citazione stile Chigago Style (17a edizione)Knauthe, Habil Erhart. Medium-term Planning of National Economy. Cairo: The Institute of National Planning, 1967.
Citatione MLA (9a ed.)Knauthe, Habil Erhart. Medium-term Planning of National Economy. The Institute of National Planning, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.