Παραπομπή σε μορφή APA (7η εκδ.)

Reichardt, H. (1971). Optimization problems in planning theory. Center of Planning and Economic Research.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Reichardt, Helmut. Optimization Problems in Planning Theory. Athens: Center of Planning and Economic Research, 1971.

Παραπομπή σε μορφή MLA (8th εκδ.)

Reichardt, Helmut. Optimization Problems in Planning Theory. Center of Planning and Economic Research, 1971.