Cita APA (7th ed.)

Schimmel, A., & Endres, F. C. (1993). The mystery of numbers. Oxford University Press.

Cita Chicago (17th ed.)

Schimmel, Annemarie, i Franz Carl Endres. The Mystery of Numbers. New York: Oxford University Press, 1993.

Cita MLA (9th ed.)

Schimmel, Annemarie, i Franz Carl Endres. The Mystery of Numbers. Oxford University Press, 1993.