Παραπομπή APA

Lewis, W. A. (1970). Tropical development 1880-1913. George Allen & Unwin Ltd.

Παραπομπή Chicago Style

Lewis, W. Arthur. Tropical Development 1880-1913. London: George Allen & Unwin Ltd, 1970.

Παραπομπή MLA

Lewis, W. Arthur. Tropical Development 1880-1913. George Allen & Unwin Ltd, 1970.