APA (7th ed.) Citation

Halmos, P. R. (1974). A Hilbert space problem book. American Book : Van Nostrand Reinhold.

Chicago Style (17th ed.) Citation

Halmos, Paul R. A Hilbert Space Problem Book. New York: American Book : Van Nostrand Reinhold, 1974.

MLA (9th ed.) Citation

Halmos, Paul R. A Hilbert Space Problem Book. American Book : Van Nostrand Reinhold, 1974.