APA引文

Wulf, L. d., & .Sokol, J. B. (2004). Customs modernization initiatives: Case studies. World Bank.

芝加哥风格引文

Wulf, Luc de, 与 Jose B. .Sokol. Customs Modernization Initiatives: Case Studies. Washington, DC: World Bank, 2004.

MLA引文

Wulf, Luc de, 与 Jose B. .Sokol. Customs Modernization Initiatives: Case Studies. World Bank, 2004.

警告：这些引文格式不一定是100％准确.