F. Simmons George, & G. Krantz Steven. (1949). Differential equations: Theory, Technique, and Practice. New York: Macmillan.
Stile di citazione ChicagoF. Simmons George, e G. Krantz Steven. Differential Equations: Theory, Technique, and Practice. New York: Macmillan, 1949.
Citazione MLAF. Simmons George, e G. Krantz Steven. Differential Equations: Theory, Technique, and Practice. New York: Macmillan, 1949.
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