Dyfyniad APA

Professional. (2014). Air ( Prevention and Control of Pollution ) Act,1981. Professional Book Publishers.

Dyfyniad Arddull Chicago

Professional. Air ( Prevention and Control of Pollution ) Act,1981. Delhi: Professional Book Publishers, 2014.

Dyfyniad MLA

Professional. Air ( Prevention and Control of Pollution ) Act,1981. Professional Book Publishers, 2014.

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