Ifrah, G., & Bellos, D. [. e. a. (1981). Universal history of numbers: From prehistory to the invention of the computer. The Harvill Press.
Styl ChicagoIfrah, Georges, a David [... et al] Bellos. Universal History of Numbers: From Prehistory to the Invention of the Computer. London: The Harvill Press, 1981.
Citace podle MLAIfrah, Georges, a David [... et al] Bellos. Universal History of Numbers: From Prehistory to the Invention of the Computer. The Harvill Press, 1981.
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