Citazione Stile APA (7a Edizione)

Hughes, G., & Bucknall, J. (2000). Poland: Complying with EU environmental legislation. World Bank.

Citazione stile Chigago Style (17a edizione)

Hughes, Gordon, e Julia Bucknall. Poland: Complying with EU Environmental Legislation. Washington, D.C: World Bank, 2000.

Citatione MLA (9a ed.)

Hughes, Gordon, e Julia Bucknall. Poland: Complying with EU Environmental Legislation. World Bank, 2000.