APA-viite (7. p.)

Keen, M., & Ligthart, J. (1999). Coordinating Tariff Reduction and Domestic Tax Reform. International Monetary Fund.

Chicago-viite (17. p.)

Keen, Michael, ja Jenny Ligthart. Coordinating Tariff Reduction and Domestic Tax Reform. Washington, D.C.: International Monetary Fund, 1999.

MLA-viite (8. p.)

Keen, Michael, ja Jenny Ligthart. Coordinating Tariff Reduction and Domestic Tax Reform. International Monetary Fund, 1999.