Ven. G.P. van de. (1996). Man-made lowlands: History of water management and land reclamation in the Netherlands. Netherlands 3rd ed., revised: Uitgeverij matrijs.
Dyfyniad Arddull ChicagoVen. G.P. van de. Man-made Lowlands: History of Water Management and Land Reclamation in the Netherlands. Netherlands 3rd ed., revised: Uitgeverij matrijs, 1996.
Dyfyniad MLAVen. G.P. van de. Man-made Lowlands: History of Water Management and Land Reclamation in the Netherlands. Netherlands 3rd ed., revised: Uitgeverij matrijs, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.