Spiegel, M. R. (1974). Schaum's outline of theory and problems of complex variables. McGraw-Hill.

Spiegel, Murray R. Schaum's Outline of Theory and Problems of Complex Variables. New York ; Singapore: McGraw-Hill, 1974.

Spiegel, Murray R. Schaum's Outline of Theory and Problems of Complex Variables. McGraw-Hill, 1974.