Lang, G. (1997). A practical guide to research methods (6th ed.). University Preess of America.
Chicago Style CitationLang, Gerhard. A Practical Guide to Research Methods. 6th ed. University Preess of America, 1997.
MLA CitationLang, Gerhard. A Practical Guide to Research Methods. 6th ed. University Preess of America, 1997.
Warning: These citations may not always be 100% accurate.