Cooper, D. R., & Schindler, P. S. (2008). Business research methods (10th. ed.). McGraw-Hill Irwin..
Cita Chicago Style (17a ed.)Cooper, Donald R., y Pamela S. Schindler. Business Research Methods. 10th. ed. Boston: McGraw-Hill Irwin., 2008.
Cita MLA (9a ed.)Cooper, Donald R., y Pamela S. Schindler. Business Research Methods. 10th. ed. McGraw-Hill Irwin., 2008.
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