Stearns, P. N. (1987). World History: Patterns of change and continuity. Harper & Row.
Dyfyniad Arddull ChicagoStearns, Peter N. World History: Patterns of Change and Continuity. New York: Harper & Row, 1987.
Dyfyniad MLAStearns, Peter N. World History: Patterns of Change and Continuity. Harper & Row, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.