Wulf, L. d., & Sokol, J. B. (2005). Customs modernization handbook. World Bank.
芝加哥风格引文Wulf, Luc de, 与 José B. Sokol. Customs Modernization Handbook. Washington, DC: World Bank, 2005.
MLA引文Wulf, Luc de, 与 José B. Sokol. Customs Modernization Handbook. World Bank, 2005.
警告：这些引文格式不一定是100％准确.