APA-referens

Spiegal, M. R. (1971). Schaum's outline of theory and problems of calculus of finite differences and difference equations. McGraw-Hill.

Chicago-stil citat

Spiegal, Murrary R. Schaum's Outline of Theory and Problems of Calculus of Finite Differences and Difference Equations. New York: McGraw-Hill, 1971.

MLA-referens

Spiegal, Murrary R. Schaum's Outline of Theory and Problems of Calculus of Finite Differences and Difference Equations. McGraw-Hill, 1971.