Cita APA (7th ed.)

Hejhal, D. A. (1976). The Selberg Trace formula for PSL, 2,IR. Springer.

Cita Chicago (17th ed.)

Hejhal, Dennis A. The Selberg Trace Formula for PSL, 2,IR. Berlín: Springer, 1976.

Cita MLA (9th ed.)

Hejhal, Dennis A. The Selberg Trace Formula for PSL, 2,IR. Springer, 1976.

Atenció: Aquestes cites poden no estar 100% correctes.