Spiegel, M. R. (1969). Schaum's Outline of Theory and Problems of Real Variables: Lebesgue Measure and Integration with Applicattions to Fourier Series. New York: McGraw-Hill.

Spiegel, Murray R. Schaum's Outline of Theory and Problems of Real Variables: Lebesgue Measure and Integration With Applicattions to Fourier Series. New York: McGraw-Hill, 1969.

Spiegel, Murray R. Schaum's Outline of Theory and Problems of Real Variables: Lebesgue Measure and Integration With Applicattions to Fourier Series. New York: McGraw-Hill, 1969.