Trager, J. (1992). The people's chronology: A year-by-year record of human events from prehistory to the present (Revised and updated edition.). Aurum Press.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিTrager, James. The People's Chronology: A Year-by-year Record of Human Events from Prehistory to the Present. Revised and updated edition. London: Aurum Press, 1992.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিTrager, James. The People's Chronology: A Year-by-year Record of Human Events from Prehistory to the Present. Revised and updated edition. Aurum Press, 1992.
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