Lough, J. R., & Murray, T. S. (1997). Summative assessment.
Chicago Style aipamenaLough, J R., and T S. Murray. Summative Assessment. 1997.
MLA aipamenaLough, J R., and T S. Murray. Summative Assessment. 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.