"The feeling of freedom", por Douglas Browning, en The Review of Metaphysics, 1, 1964. "Problems of order", por W. Donald Oliver, en The Review of Methaphysics, 1, 1964
Sánchez de la Torre, Angel (1966). "The feeling of freedom", por Douglas Browning, en The Review of Metaphysics, 1, 1964. "Problems of order", por W. Donald Oliver, en The Review of Methaphysics, 1, 1964. ANUARIO DE FILOSOFÍA DEL DERECHO . pp. 547-547.
