APA (7e ed.) Bronvermelding

linsel, h., & sack, k. (1965). theoretical problems of investment planning. National Planning Institute.

Chicago (17e ed.) Bronvermelding

linsel, hermann, en kurt sack. Theoretical Problems of Investment Planning. cairo: National Planning Institute, 1965.

MLA (9e ed.) Bronvermelding

linsel, hermann, en kurt sack. Theoretical Problems of Investment Planning. National Planning Institute, 1965.

Let op: Deze citaties zijn niet altijd 100% accuraat.