Dyfyniad APA

Douglas, W. J. (1995). Environmental GIS, applications to industrial facilities. Lewis Publishers.

Dyfyniad Arddull Chicago

Douglas, William J. Environmental GIS, Applications to Industrial Facilities. Boca Raton: Lewis Publishers, 1995.

Dyfyniad MLA

Douglas, William J. Environmental GIS, Applications to Industrial Facilities. Lewis Publishers, 1995.

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