Dyfyniad APA

Greenway, A. R. (2003). How to obtain air quality permits. New York: McGraw-Hill.

Dyfyniad Arddull Chicago

Greenway, A. Roger. How to Obtain Air Quality Permits. New York: McGraw-Hill, 2003.

Dyfyniad MLA

Greenway, A. Roger. How to Obtain Air Quality Permits. New York: McGraw-Hill, 2003.

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