Dyfyniad APA

Hay, N. E. (1987). Natural gas applications for air pollution control. Fairmont Press.

Dyfyniad Arddull Chicago

Hay, Nelson E. Natural Gas Applications for Air Pollution Control. Lilburn, Ga: Fairmont Press, 1987.

Dyfyniad MLA

Hay, Nelson E. Natural Gas Applications for Air Pollution Control. Fairmont Press, 1987.

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