Mason, E. J., & Bramble William J. (1989). Understanding and conducting research: Applications in education and the behavioral sciences (2nd ed.). McGraw-Hill.
Παραπομπή σε μορφή Chicago (17η εκδ.)Mason, Emanuel J., και Bramble William J. Understanding and Conducting Research: Applications in Education and the Behavioral Sciences. 2nd ed. New York: McGraw-Hill, 1989.
Παραπομπή σε μορφή MLA (9th εκδ.)Mason, Emanuel J., και Bramble William J. Understanding and Conducting Research: Applications in Education and the Behavioral Sciences. 2nd ed. McGraw-Hill, 1989.
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