APA (7th ed.) Zitazioa
Cooper, D. R., & Schindler, P. S. (2001). Business research methods (7th ed.). Irwin/McGraw-Hill.
Chicago Style (17th ed.) Zitazioa
Cooper, Donald R., eta Pamela S. Schindler. Business Research Methods. 7th ed. Boston, Mass.: Irwin/McGraw-Hill, 2001.
MLA (9th ed.) Zitazioa
Cooper, Donald R., eta Pamela S. Schindler. Business Research Methods. 7th ed. Irwin/McGraw-Hill, 2001.
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