Trager, J. (1992). The people's chronology: A year-by-year record of human events from prehistory to the present. Aurum Press.
Chicago-viite (17. p.)Trager, James. The People's Chronology: A Year-by-year Record of Human Events from Prehistory to the Present. London: Aurum Press, 1992.
MLA-viite (9. p.)Trager, James. The People's Chronology: A Year-by-year Record of Human Events from Prehistory to the Present. Aurum Press, 1992.
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