Citazione Stile APA (7a Edizione)

Wiersma, W. (1995). Research methods in education: An introduction (6th ed.). Allyn and Bacon.

Citazione stile Chigago Style (17a edizione)

Wiersma, William. Research Methods in Education: An Introduction. 6th ed. Boston: Allyn and Bacon, 1995.

Citatione MLA (9a ed.)

Wiersma, William. Research Methods in Education: An Introduction. 6th ed. Allyn and Bacon, 1995.