Παραπομπή APA

Lewis,W Arthur. (1949). Principles of economic planning: A study prepared for the Fabian society. George Allen & Habour.

Παραπομπή Chicago Style

Lewis,W Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. Bombay: George Allen & Habour, 1949.

Παραπομπή MLA

Lewis,W Arthur. Principles of Economic Planning: A Study Prepared for the Fabian Society. George Allen & Habour, 1949.