APA (7th ed.) Citation

Wulf, M. d. (1959). The system of Thomas Aquinas / by M. de Wulf. Constable.

Chicago Style (17th ed.) Citation

Wulf, M. de. The System of Thomas Aquinas / by M. De Wulf. Constable, 1959.

MLA (9th ed.) Citation

Wulf, M. de. The System of Thomas Aquinas / by M. De Wulf. Constable, 1959.

Warning: These citations may not always be 100% accurate.