Anthony, W. A. (1980). The Skills of diagnostic planning. University Park Press.
Dyfyniad Arddull ChicagoAnthony, William Alan. The Skills of Diagnostic Planning. Baltimore, Md.: University Park Press, 1980.
Dyfyniad MLAAnthony, William Alan. The Skills of Diagnostic Planning. University Park Press, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.