APA (7th ed.) Citation

Katō, T. (1966). Perturbation theory for linear operators. Springer.

Chicago Style (17th ed.) Citation

Katō, Tosio. Perturbation Theory for Linear Operators. Berlin: Springer, 1966.

MLA (8th ed.) Citation

Katō, Tosio. Perturbation Theory for Linear Operators. Springer, 1966.