Callahan, C. M. (2004). Program evaluation in gifted education. Corwin Press.
Chicago Style aipamenaCallahan, Carolyn M. Program Evaluation in Gifted Education. Thousand Oaks, Calif.: Corwin Press, 2004.
MLA aipamenaCallahan, Carolyn M. Program Evaluation in Gifted Education. Corwin Press, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.