forrester, j. w. (1961). Industrial Dynamics. massachusets institute of technology.
Dyfyniad Arddull Chicagoforrester, jay w. Industrial Dynamics. New york: massachusets institute of technology, 1961.
Dyfyniad MLAforrester, jay w. Industrial Dynamics. massachusets institute of technology, 1961.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.