Lutz, W. (1996). The Future population of the world: What can we assume today. London: Earthscan.
استشهاد بنمط شيكاغوLutz, Wolfgang. The Future Population of the World: What Can We Assume Today. London: Earthscan, 1996.
MLA استشهادLutz, Wolfgang. The Future Population of the World: What Can We Assume Today. London: Earthscan, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.