Cita APA (7th ed.)

HALMOS, P. R. (1967). A Hilbert space problem book. American Book.

Cita Chicago (17th ed.)

HALMOS, Paul R. A Hilbert Space Problem Book. New York: American Book, 1967.

Cita MLA (9th ed.)

HALMOS, Paul R. A Hilbert Space Problem Book. American Book, 1967.