APA (7e ed.) Bronvermelding

World Bank Group. (1999). Natural gas: Private sector participation and market development. World Bank Group.

Chicago (17e ed.) Bronvermelding

World Bank Group. Natural Gas: Private Sector Participation and Market Development. Washington, D.C: World Bank Group, 1999.

MLA (9e ed.) Bronvermelding

World Bank Group. Natural Gas: Private Sector Participation and Market Development. World Bank Group, 1999.

Let op: Deze citaties zijn niet altijd 100% accuraat.