XANTHAKOS, P. P. (1994). Ground Control And Improvesment Petros P Xanthakos , Lee W. Abramson, Donald A. Bruce. John Willey & Sons Inc.
Dyfyniad Arddull ChicagoXANTHAKOS, Petros P. Ground Control And Improvesment Petros P Xanthakos , Lee W. Abramson, Donald A. Bruce. John Willey & Sons Inc, 1994.
Dyfyniad MLAXANTHAKOS, Petros P. Ground Control And Improvesment Petros P Xanthakos , Lee W. Abramson, Donald A. Bruce. John Willey & Sons Inc, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.