APA (7th ed.) Zitazioa
Lyons, K. J. (2000). Buying for the future: Contract management and the environmental challenge. Pluto Press in association with WWF.
Chicago Style (17th ed.) Zitazioa
Lyons, Kevin J. Buying for the Future: Contract Management and the Environmental Challenge. London: Pluto Press in association with WWF, 2000.
MLA (9th ed.) Zitazioa
Lyons, Kevin J. Buying for the Future: Contract Management and the Environmental Challenge. Pluto Press in association with WWF, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.