APA (7th ed.) Zitazioa
(1979). Development plan: For the period 1979 to 1983 (ed.).
Chicago Style (17th ed.) Zitazioa
Development Plan: For the Period 1979 to 1983. ed. 1979.
MLA (9th ed.) Zitazioa
Development Plan: For the Period 1979 to 1983. ed. 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.