APA (7th ed.) Zitazioa
ebrary, Inc, & Sornson, R. (2001). Preventing early learning failure. Association for Supervision & Curriculum Development.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, eta Robert Sornson. Preventing Early Learning Failure. Alexandria, Va.: Association for Supervision & Curriculum Development, 2001.
MLA (9th ed.) Zitazioa
ebrary, Inc, eta Robert Sornson. Preventing Early Learning Failure. Association for Supervision & Curriculum Development, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.