APA-viite (7. p.)

Eskeland, G. S. (2000). Externalities and production efficiency. World Bank.

Chicago-viite (17. p.)

Eskeland, Gunnar S. Externalities and Production Efficiency. Washington, DC: World Bank, 2000.

MLA-viite (9. p.)

Eskeland, Gunnar S. Externalities and Production Efficiency. World Bank, 2000.