APA (7th ed.) Citation

Helson, H. (1986). The spectral theorem. Springer-Verlag.

Chicago Style (17th ed.) Citation

Helson, Henry. The Spectral Theorem. Berlin ; New York: Springer-Verlag, 1986.

MLA (9th ed.) Citation

Helson, Henry. The Spectral Theorem. Springer-Verlag, 1986.