Dyfyniad APA

Hey, N. E. (1987). Natural Gas Applications for Air Pollution Control. The Fairmont.

Dyfyniad Arddull Chicago

Hey, Nelson. E. Natural Gas Applications for Air Pollution Control. Lilburn: The Fairmont, 1987.

Dyfyniad MLA

Hey, Nelson. E. Natural Gas Applications for Air Pollution Control. The Fairmont, 1987.

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