APA Citation

Northrup, D., & Northrup, D. (1978). Trade without rulers: Pre-colonial economic development in South-Eastern Nigeria. Oxford: Clarendon Press.

Chicago Style Citation

Northrup, David, and David Northrup. Trade Without Rulers: Pre-colonial Economic Development in South-Eastern Nigeria. Oxford: Clarendon Press, 1978.

MLA Citation

Northrup, David, and David Northrup. Trade Without Rulers: Pre-colonial Economic Development in South-Eastern Nigeria. Oxford: Clarendon Press, 1978.

Warning: These citations may not always be 100% accurate.