APA (7th ed.) Citation

Noumba Um, P. (2004). A Model for calculating interconnection costs in telecommunications. World Bank.

Chicago Style (17th ed.) Citation

Noumba Um, Paul. A Model for Calculating Interconnection Costs in Telecommunications. Washington, D.C: World Bank, 2004.

MLA (9th ed.) Citation

Noumba Um, Paul. A Model for Calculating Interconnection Costs in Telecommunications. World Bank, 2004.