Cita APA

Hellman, G. (1989). Mathematics without Numbers. Clarendon Press, Oxford.

Chicago Edition Citation

Hellman, Geoffrey. Mathematics Without Numbers. Clarendon Press, Oxford, 1989.

Cita MLA

Hellman, Geoffrey. Mathematics Without Numbers. Clarendon Press, Oxford, 1989.

Atenció: Aquestes cites poden no estar 100% correctes.