APA (7th ed.) Citation

Gray, R., & Birmingham, D. (1970). Pre-Colonial African Trade: Essays on trade in Central and Eastern Africa before 1900. Oxford U.P..

Chicago Style (17th ed.) Citation

Gray, Richard, and David Birmingham. Pre-Colonial African Trade: Essays on Trade in Central and Eastern Africa Before 1900. London, New York: Oxford U.P., 1970.

MLA (9th ed.) Citation

Gray, Richard, and David Birmingham. Pre-Colonial African Trade: Essays on Trade in Central and Eastern Africa Before 1900. Oxford U.P., 1970.