Sharpe, G. W. (2003). Introduction to forests and renewable resources. Boston, MA: McGraw -Hill.
Dyfyniad Arddull ChicagoSharpe, Grant William. Introduction to Forests and Renewable Resources. Boston, MA: McGraw -Hill, 2003.
Dyfyniad MLASharpe, Grant William. Introduction to Forests and Renewable Resources. Boston, MA: McGraw -Hill, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.