APA aipamena

Castillo Sánchez, M. (2010). Dropouts at the University Level.

Chicago Style aipamena

Castillo Sánchez, Mario. Dropouts At the University Level. 2010.

MLA aipamena

Castillo Sánchez, Mario. Dropouts At the University Level. 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.