Duncan, C. P., Spence, J. T., & Underwood, B. J. (1968). Elementary Statistics. New York: Appleton-Century-Crofts.
Citación estilo ChicagoDuncan, Carl P., Janet T. Spence, y Benton J. Underwood. Elementary Statistics. New York: Appleton-Century-Crofts, 1968.
Cita MLADuncan, Carl P., Janet T. Spence, y Benton J. Underwood. Elementary Statistics. New York: Appleton-Century-Crofts, 1968.
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