Spiegel, M. R. (1971). Schaum's outline of theory and problems of calculus of finite differences and difference equations: Schaum's outline of theory and problems of calculus of finite differences and difference equations (1. izd.). McGraw-Hill Publishing Company.
Chicago stil citiranjaSpiegel, Murray R. Schaum's outline of theory and problems of calculus of finite differences and difference equations: Schaum's outline of theory and problems of calculus of finite differences and difference equations. 1. izd. McGraw-Hill Publishing Company, 1971.
MLA stil citiranjaSpiegel, Murray R. Schaum's outline of theory and problems of calculus of finite differences and difference equations: Schaum's outline of theory and problems of calculus of finite differences and difference equations. 1. izd. McGraw-Hill Publishing Company, 1971.