APA (7th ed.) Citation

Freitag, E. (1990). Hilbert modular forms. Springer-Verlag.

Chicago Style (17th ed.) Citation

Freitag, E. Hilbert Modular Forms. Berlin ; New York: Springer-Verlag, 1990.

MLA (9th ed.) Citation

Freitag, E. Hilbert Modular Forms. Springer-Verlag, 1990.