Knauthe, H. E. (1967). Medium-term Planning of National Economy. The Institute of National Planning.
Chicago-čujuhus (17. p.)Knauthe, Habil Erhart. Medium-term Planning of National Economy. Cairo: The Institute of National Planning, 1967.
MLA-čujuhus (9. p.)Knauthe, Habil Erhart. Medium-term Planning of National Economy. The Institute of National Planning, 1967.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.