Dyfyniad APA
Dalen, D. B. V. (1973). Understanding educational research: An introduction (3rd ed.). McGraw-hill.
Dyfyniad Arddull Chicago
Dalen, Deobold B. Van. Understanding Educational Research: An Introduction. 3rd ed. New York: McGraw-hill, 1973.
Dyfyniad MLA
Dalen, Deobold B. Van. Understanding Educational Research: An Introduction. 3rd ed. McGraw-hill, 1973.
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