Spiegel, M. R. (1971). Theory and problems of calculus of finite differences and differential equations. Mc Graw - Hill.
Chicago-стиль цитированияSpiegel, Murray R. Theory and Problems of Calculus of Finite Differences and Differential Equations. New York: Mc Graw - Hill, 1971.
MLA-цитированиеSpiegel, Murray R. Theory and Problems of Calculus of Finite Differences and Differential Equations. Mc Graw - Hill, 1971.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.