Fagan, B. M. (1977). People of the earth: An introduction to world prehistory (2nd ed.). Boston MA: Little, Brown.
Чикагска система за цитиранеFagan, Brian M. People of the Earth: An Introduction to World Prehistory. 2nd ed. Boston MA: Little, Brown, 1977.
MLA формат за цитиранеFagan, Brian M. People of the Earth: An Introduction to World Prehistory. 2nd ed. Boston MA: Little, Brown, 1977.
Внимание: Тези цитати може да не са 100% точни.