Dyfyniad APA

H J Winkels. (1997). Contaminant variability in a sedimentation area of the river Rhine. Wageningen: Wageningen Agricultural Univ.

Dyfyniad Arddull Chicago

H J Winkels. Contaminant Variability in a Sedimentation Area of the River Rhine. Wageningen: Wageningen Agricultural Univ, 1997.

Dyfyniad MLA

H J Winkels. Contaminant Variability in a Sedimentation Area of the River Rhine. Wageningen: Wageningen Agricultural Univ, 1997.

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