APA (7e ed.) Bronvermelding

Killeen, S. M. (1939). The philosophy of labor according to Thomas Aquinas: A study in social philosophy. The Catholic University of Ameica Press.

Chicago (17e ed.) Bronvermelding

Killeen, Sylvester Michael. The Philosophy of Labor According to Thomas Aquinas: A Study in Social Philosophy. Washington, D. C.: The Catholic University of Ameica Press, 1939.

MLA (8e ed.) Bronvermelding

Killeen, Sylvester Michael. The Philosophy of Labor According to Thomas Aquinas: A Study in Social Philosophy. The Catholic University of Ameica Press, 1939.