Gamow, G. (1953). Biography of the earth: Its past, present and future. New York: Viking.
استشهاد بنمط شيكاغوGamow, George. Biography of the Earth: Its Past, Present and Future. New York: Viking, 1953.
MLA استشهادGamow, George. Biography of the Earth: Its Past, Present and Future. New York: Viking, 1953.
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