Burt, J. E., & Barber, G. M. (1996). Elementary statistics for geographers (2nd ed.). Guilford Press.
Citace podle Chicago (17th ed.)Burt, James E., a Gerald M. Barber. Elementary Statistics for Geographers. 2nd ed. New York: Guilford Press, 1996.
Citace podle MLA (9th ed.)Burt, James E., a Gerald M. Barber. Elementary Statistics for Geographers. 2nd ed. Guilford Press, 1996.
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