Cita APA

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

Chicago Edition Citation

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

Cita MLA

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