APA (7th ed.) Citation

Herrero, D. A. Approximation of Hilbert space operators. Longman.

Chicago Style (17th ed.) Citation

Herrero, Domingo A. Approximation of Hilbert Space Operators. Harlow: Longman.

MLA (9th ed.) Citation

Herrero, Domingo A. Approximation of Hilbert Space Operators. Longman.

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