Dyfyniad APA

Sharma, H. (2004). Ozone depletion and environmental impacts. Pointer.

Dyfyniad Arddull Chicago

Sharma, H.S. Ozone Depletion and Environmental Impacts. Jaipur: Pointer, 2004.

Dyfyniad MLA

Sharma, H.S. Ozone Depletion and Environmental Impacts. Pointer, 2004.

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