Halmos,Paul R. (1967). A Hilbert Space Problem Book (1967.). American Book.
Chicago Edition CitationHalmos,Paul R. A Hilbert Space Problem Book. 1967. New York: American Book, 1967.
MLA Edition CitationHalmos,Paul R. A Hilbert Space Problem Book. 1967. American Book, 1967.
Warning: These citations may not always be 100% accurate.