APA (7th ed.) Citation

Sokol, J. B., & De Wulf, L. (2005). Customs modernization handbook. World Bank.

Chicago Style (17th ed.) Citation

Sokol, José B., and Luc De Wulf. Customs Modernization Handbook. Washington, DC: World Bank, 2005.

MLA (9th ed.) Citation

Sokol, José B., and Luc De Wulf. Customs Modernization Handbook. World Bank, 2005.