Kiely, G. (1997). Environmental engineering. London: McGraw-Hill.
Dyfyniad Arddull ChicagoKiely, Gerard. Environmental Engineering. London: McGraw-Hill, 1997.
Dyfyniad MLAKiely, Gerard. Environmental Engineering. London: McGraw-Hill, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.