Lua APA (7ú heag.)
Cooper, D. R., & Schindler, P. S. (2006). Business research methods (9th ed.). McGraw-Hill Irwin.
Lua i Stíl Chicago (17ú heag.)
Cooper, Donald R., agus Pamela S. Schindler. Business Research Methods. 9th ed. Boston: McGraw-Hill Irwin, 2006.
Lua MLA (9ú heag.)
Cooper, Donald R., agus Pamela S. Schindler. Business Research Methods. 9th ed. McGraw-Hill Irwin, 2006.
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