Παραπομπή APA

Belshaw, H. (1960). Population growth and levels of consumption.

Παραπομπή Chicago Style

Belshaw, Horace. Population Growth and Levels of Consumption. George Allen & Unwin Ltd., London, 1960.

Παραπομπή MLA

Belshaw, Horace. Population Growth and Levels of Consumption. 1960.