APA (7th ed.) Zitazioa
(1985). Development: Seeds of change. Christengraf.
Chicago Style (17th ed.) Zitazioa
Development: Seeds of Change. Italy: Christengraf, 1985.
MLA (9th ed.) Zitazioa
Development: Seeds of Change. Christengraf, 1985.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.