Cita APA (7a ed.)

Hellman, G. (1989). Mathematics without numbers: Towards a modal-structural interpretation. Clarendon Press ; Oxford Univ. Press.

Cita Chicago Style (17a ed.)

Hellman, Geoffrey. Mathematics Without Numbers: Towards a Modal-structural Interpretation. Oxford : New York: Clarendon Press ; Oxford Univ. Press, 1989.

Cita MLA (8a ed.)

Hellman, Geoffrey. Mathematics Without Numbers: Towards a Modal-structural Interpretation. Clarendon Press ; Oxford Univ. Press, 1989.