APA-ийн эшлэл(7 дахь хэвлэлт)

World Bank, ebrary, Inc, & Raballand, G. (2012). Why does cargo spend weeks in Sub-Saharan African ports?: Lessons from six countries. World Bank.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

World Bank, Inc ebrary, ба Gaël Raballand. Why Does Cargo Spend Weeks in Sub-Saharan African Ports?: Lessons from Six Countries. Washington, D.C.: World Bank, 2012.

MLA -ийн эшлэл (9 дэх хэвлэлт)

World Bank, et al. Why Does Cargo Spend Weeks in Sub-Saharan African Ports?: Lessons from Six Countries. World Bank, 2012.