Cowles, E. L., & Nelson, E. (2015). An introduction to survey research (First edition.). Business Expert Press.
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Dyfyniad Arddull Chicago
Cowles, Ernest L., and Edward Nelson. An Introduction to Survey Research. First edition. New York, New York (222 East 46th Street, New York, NY 10017): Business Expert Press, 2015.
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Dyfyniad MLA
Cowles, Ernest L., and Edward Nelson. An Introduction to Survey Research. First edition. Business Expert Press, 2015.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.