APA (7th ed.) Zitazioa

(1992). Vocational Education for the 21st Century John V. Hamby. [microform].

Chicago Style (17th ed.) Zitazioa

Vocational Education for the 21st Century John V. Hamby. [microform]. 1992.

MLA (9th ed.) Zitazioa

Vocational Education for the 21st Century John V. Hamby. [microform]. 1992.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.