Παραπομπή APA

Heimpel, C. (1973). Planning regional development programs: Five case studies from Ethiopia, Bolivia, Nepal, Peru, Zambia. Berlin: [s.n.].

Παραπομπή Chicago Style

Heimpel, Christian. Planning Regional Development Programs: Five Case Studies From Ethiopia, Bolivia, Nepal, Peru, Zambia. Berlin: [s.n.], 1973.

Παραπομπή MLA

Heimpel, Christian. Planning Regional Development Programs: Five Case Studies From Ethiopia, Bolivia, Nepal, Peru, Zambia. Berlin: [s.n.], 1973.

Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.