APA
Wiersma w., . (1995). Research Methods in Education : an introduction. Allyn and Bacon, Boston: .
Chicago
Wiersma william, . 1995. Research Methods in Education : an introduction. Allyn and Bacon, Boston: .
Harvard
Wiersma w., . (1995). Research Methods in Education : an introduction. Allyn and Bacon, Boston: .
MLA
Wiersma william, . Research Methods in Education : an introduction. Allyn and Bacon, Boston: . 1995.