Duane, D. B. (1970). Synoptic observations of sand movement. U.S. Army, Corps of Engineers, Coastal Engineering Research Center.
Dyfyniad Arddull ChicagoDuane, David B. Synoptic Observations of Sand Movement. Washington: U.S. Army, Corps of Engineers, Coastal Engineering Research Center, 1970.
Dyfyniad MLADuane, David B. Synoptic Observations of Sand Movement. U.S. Army, Corps of Engineers, Coastal Engineering Research Center, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.