Citazione Stile APA (7a Edizione)

Blackwell, J. M., & Blackwell, J. (1991). Environment and development in Africa: Selected case studies. World Bank.

Citazione stile Chigago Style (17a edizione)

Blackwell, Jonathan M., e J.M Blackwell. Environment and Development in Africa: Selected Case Studies. Washington, D.C: World Bank, 1991.

Citatione MLA (9a ed.)

Blackwell, Jonathan M., e J.M Blackwell. Environment and Development in Africa: Selected Case Studies. World Bank, 1991.