APA (7th ed.) Zitazioa

Gagliardi, R. (1994). Environmental training: Policy and practice for sustainable development. Oxford & IBH.

Chicago Style (17th ed.) Zitazioa

Gagliardi, Raul. Environmental Training: Policy and Practice for Sustainable Development. New Delhi: Oxford & IBH, 1994.

MLA (9th ed.) Zitazioa

Gagliardi, Raul. Environmental Training: Policy and Practice for Sustainable Development. Oxford & IBH, 1994.