Fraenkel, J. R., & Wallen, N. E. (2009). How to design and evaluate research in education (7th ed.). McGraw-Hill.
Chicago (17e ed.) BronvermeldingFraenkel, Jack R., en Norman E. Wallen. How to Design and Evaluate Research in Education. 7th ed. New York, NY: McGraw-Hill, 2009.
MLA (8e ed.) BronvermeldingFraenkel, Jack R., en Norman E. Wallen. How to Design and Evaluate Research in Education. 7th ed. McGraw-Hill, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.