Dyfyniad APA

colombo,Umberto. (1998). Energy and sustainable development. Tata energy research institute.

Dyfyniad Arddull Chicago

colombo,Umberto. Energy and Sustainable Development. Tata energy research institute, 1998.

Dyfyniad MLA

colombo,Umberto. Energy and Sustainable Development. Tata energy research institute, 1998.

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