Carey, S. S. (2012). A beginner's guide to scientific method (4th ed.). Wadsworth Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Carey, Stephen S. A Beginner's Guide to Scientific Method. 4th ed. Boston, MA: Wadsworth Cengage Learning, 2012.
Lua MLA (9ú heag.)Carey, Stephen S. A Beginner's Guide to Scientific Method. 4th ed. Wadsworth Cengage Learning, 2012.
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