APA

Spiegel M. R., . (1971). Schaum's outline of theory and problems of calculus of finite differences and difference equations. New York, NY [u.a.]: McGraw-Hill.

Chicago

Spiegel Murray R, . 1971. Schaum's outline of theory and problems of calculus of finite differences and difference equations. New York, NY [u.a.]: McGraw-Hill.

Harvard

Spiegel M. R., . (1971). Schaum's outline of theory and problems of calculus of finite differences and difference equations. New York, NY [u.a.]: McGraw-Hill.

MLA

Spiegel Murray R, . Schaum's outline of theory and problems of calculus of finite differences and difference equations. New York, NY [u.a.]: McGraw-Hill. 1971.