Hutchins, R. M. 1., Preece, W. E. 1., & University of Chicago. (1979). The new encyclopaedia britannica in 30 volumes (15th ed.). Chicago [etc.]: Encyclopaedia Britannica, Inc.
Citación estilo ChicagoHutchins, Robert M. 1899-1977, Warren E. 1921-2007 Preece, and University of Chicago. The New Encyclopaedia Britannica in 30 Volumes. 15th ed. Chicago [etc.]: Encyclopaedia Britannica, Inc, 1979.
Cita MLAHutchins, Robert M. 1899-1977, Warren E. 1921-2007 Preece, and University of Chicago. The New Encyclopaedia Britannica in 30 Volumes. 15th ed. Chicago [etc.]: Encyclopaedia Britannica, Inc, 1979.
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