APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Wulf, Luc de, and Jose B. Sokol. Customs Modernization Handbook. Washington, D.C: World Bank, 2005.

MLA (9th ed.) Citation

Wulf, Luc de, and Jose B. Sokol. Customs Modernization Handbook. World Bank, 2005.