Παραπομπή APA

Johr, W. A. S. (1955). Role of the economist as official adviser.

Παραπομπή Chicago Style

Johr, W A; Singer. Role of the Economist as Official Adviser. George Allen & Unwin Ltd., London, 1955.

Παραπομπή MLA

Johr, W A; Singer. Role of the Economist as Official Adviser. 1955.