Louis Cohen, Keith Morrison, & Lawrence Manion. (2000). Research methods in Education (5th ed.). Routledge.
Chicago Style aipamenaLouis Cohen, Keith Morrison, and Lawrence Manion. Research Methods in Education. 5th ed. London: Routledge, 2000.
MLA aipamenaLouis Cohen, et al. Research Methods in Education. 5th ed. Routledge, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.