APA (7th ed.) Citation

Herrero, D. A., & Apostol, C. (1982). Approximation of Hilbert space operators. Pitman.

Chicago Style (17th ed.) Citation

Herrero, Domingo A., and C. Apostol. Approximation of Hilbert Space Operators. Boston: Pitman, 1982.

MLA (8th ed.) Citation

Herrero, Domingo A., and C. Apostol. Approximation of Hilbert Space Operators. Pitman, 1982.

Warning: These citations may not always be 100% accurate.