APA (7th ed.) Citation

Friedrichs, K. O. (1960). Spectral theory of operators in Hilbert space. Institute of Mathematical Sciences, New York University.

Chicago Style (17th ed.) Citation

Friedrichs, K. O. Spectral Theory of Operators in Hilbert Space. [New York]: Institute of Mathematical Sciences, New York University, 1960.

MLA (9th ed.) Citation

Friedrichs, K. O. Spectral Theory of Operators in Hilbert Space. Institute of Mathematical Sciences, New York University, 1960.

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