APA (7th ed.) Zitazioa
(1980). Proceedings: International workshop on energy survey methodologies for developing countries. National Academy.
Chicago Style (17th ed.) Zitazioa
Proceedings: International Workshop on Energy Survey Methodologies for Developing Countries. Washington, D. C.: National Academy, 1980.
MLA (9th ed.) Zitazioa
Proceedings: International Workshop on Energy Survey Methodologies for Developing Countries. National Academy, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.