APA (7th ed.) Citation

Halmos, P. R. (1982). A Hilbert space problem book (2nd ed., rev. and enl. ed.). Springer.

Chicago Style (17th ed.) Citation

Halmos, Paul R. A Hilbert Space Problem Book. 2nd ed., rev. and enl. ed. New York: Springer, 1982.

MLA (9th ed.) Citation

Halmos, Paul R. A Hilbert Space Problem Book. 2nd ed., rev. and enl. ed. Springer, 1982.