Mulligan, R. W. (1955). Ratio superior and ratio inferior: The historical background. The New scholasticism, 29, 1-32.
Citazione stile Chigago Style (17a edizione)Mulligan, Robert W. "Ratio Superior and Ratio Inferior: The Historical Background." The New Scholasticism 29 (1955): 1-32.
Citatione MLA (8a ed.)Mulligan, Robert W. "Ratio Superior and Ratio Inferior: The Historical Background." The New Scholasticism, vol. 29, 1955, pp. 1-32.
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