Dyfyniad APA

Environmental Engineering Division Board. Journal of the Institution of Engineers (India). Environmental Engineering Division Board.

Dyfyniad Arddull Chicago

Environmental Engineering Division Board. Journal of the Institution of Engineers (India). India: Environmental Engineering Division Board.

Dyfyniad MLA

Environmental Engineering Division Board. Journal of the Institution of Engineers (India). Environmental Engineering Division Board.

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