APA

Halmos P. R., . (1951). Introduction to Hilbert Space and Theory of Spectral Multiplicity. New York: Chelsea Publishing Company.

Chicago

Halmos Paul R, . 1951. Introduction to Hilbert Space and Theory of Spectral Multiplicity. New York: Chelsea Publishing Company.

Harvard

Halmos P. R., . (1951). Introduction to Hilbert Space and Theory of Spectral Multiplicity. New York: Chelsea Publishing Company.

MLA

Halmos Paul R, . Introduction to Hilbert Space and Theory of Spectral Multiplicity. New York: Chelsea Publishing Company. 1951.