Παραπομπή APA

Hansen, B. (1972). Long and Short-term Planning in Underdevelopment Countries. North-Holland Publishing Company.

Παραπομπή Chicago Style

Hansen, Bent. Long and Short-term Planning in Underdevelopment Countries. Amsterdam: North-Holland Publishing Company, 1972.

Παραπομπή MLA

Hansen, Bent. Long and Short-term Planning in Underdevelopment Countries. North-Holland Publishing Company, 1972.