Παραπομπή APA

Lewis, W. A. (1966). Development Planning: Essentials of Economic Policy. Allen & Unwin.

Παραπομπή Chicago Style

Lewis, W Arthur. Development Planning: Essentials of Economic Policy. London: Allen & Unwin, 1966.

Παραπομπή MLA

Lewis, W Arthur. Development Planning: Essentials of Economic Policy. Allen & Unwin, 1966.