Παραπομπή APA

Halm, G. N. (1960). Economic sysstems: A comparative analysis/3e (3rd ed.). Oxford & IBH.

Παραπομπή Chicago Style

Halm, George N. Economic Sysstems: A Comparative Analysis/3e. 3rd ed. Calcutta: Oxford & IBH, 1960.

Παραπομπή MLA

Halm, George N. Economic Sysstems: A Comparative Analysis/3e. 3rd ed. Oxford & IBH, 1960.