APA (7th ed.) Citation

Halmos, P. R. (1967). A Hilbert space problem book. van Nostrand.

Chicago Style (17th ed.) Citation

Halmos, Paul R. A Hilbert Space Problem Book. Princeton, NJ [u.a.]: van Nostrand, 1967.

MLA (9th ed.) Citation

Halmos, Paul R. A Hilbert Space Problem Book. van Nostrand, 1967.