Dyfyniad APA

World Bank & ebrary, Inc. (2011). The little data book on information and communication technology: 2011. World Bank.

Dyfyniad Arddull Chicago

World Bank and Inc ebrary. The Little Data Book on Information and Communication Technology: 2011. Washington D.C.: World Bank, 2011.

Dyfyniad MLA

World Bank and Inc ebrary. The Little Data Book on Information and Communication Technology: 2011. World Bank, 2011.

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