Fraenkel, J. R., Hyun, H. H., & Wallen, N. E. (2011). How to design and evaluate research in education (8th ed.). New York: McGraw-Hill Humanities/Social Sciences/Languages.
Dyfyniad Arddull ChicagoFraenkel, Jack R., Helen H. Hyun, và Norman E. Wallen. How to Design and Evaluate Research in Education. 8th ed. New York: McGraw-Hill Humanities/Social Sciences/Languages, 2011.
Dyfyniad MLAFraenkel, Jack R., Helen H. Hyun, và Norman E. Wallen. How to Design and Evaluate Research in Education. 8th ed. New York: McGraw-Hill Humanities/Social Sciences/Languages, 2011.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.