Dyfyniad APA

Bettinger, P., & Wing, M. G. (2004). Geographic information systems: Applications in forestry and natural resources management. McGraw-Hill.

Dyfyniad Arddull Chicago

Bettinger, Pete, and Michael G. Wing. Geographic Information Systems: Applications in Forestry and Natural Resources Management. Boston: McGraw-Hill, 2004.

Dyfyniad MLA

Bettinger, Pete, and Michael G. Wing. Geographic Information Systems: Applications in Forestry and Natural Resources Management. McGraw-Hill, 2004.

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