APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.