Dyfyniad APA

World Bank. (2008). Sustainable land management sourcebook. World Bank.

Dyfyniad Arddull Chicago

World Bank. Sustainable Land Management Sourcebook. Washington, DC: World Bank, 2008.

Dyfyniad MLA

World Bank. Sustainable Land Management Sourcebook. World Bank, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.