APA引文

World Trade Organization. (1995). Second protocol to the general agreement on trade in services. WTO.

Chicago Edition Citation

World Trade Organization. Second Protocol to the General Agreement on Trade in Services. Geneva: WTO, 1995.

MLA引文

World Trade Organization. Second Protocol to the General Agreement on Trade in Services. WTO, 1995.

警告：这些引文格式不一定是100％准确.