Citazione APA

William Wiersma. (1991). Research methods in education: An introduction (5th.). Allyn and Bacon.

Stile di citazione Chicago

William Wiersma. Research Methods in Education: An Introduction. 5th. Boston: Allyn and Bacon, 1991.

Citazione MLA

William Wiersma. Research Methods in Education: An Introduction. 5th. Allyn and Bacon, 1991.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.