F. Simmons George, & G. Krantz Steven. (1949). Differential equations: Theory, Technique, and Practice. New York: Macmillan.
Dyfyniad Arddull ChicagoF. Simmons George, và G. Krantz Steven. Differential Equations: Theory, Technique, and Practice. New York: Macmillan, 1949.
Dyfyniad MLAF. Simmons George, và G. Krantz Steven. Differential Equations: Theory, Technique, and Practice. New York: Macmillan, 1949.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.