Ullmann, W. (1973). John of Paris, On Royal and Papal Power. Translated with an Introd. by J. A. Watt. Pp. 262. Toronto: Pontifical Institute of Mediaeval Studies, 1971. n.p. The journal of ecclesiastical history, 24(2), 218. doi:10.1017/S002204690005079X
Citazione stile Chigago Style (17a edizione)Ullmann, Walter. "John of Paris, On Royal and Papal Power. Translated with an Introd. by J. A. Watt. Pp. 262. Toronto: Pontifical Institute of Mediaeval Studies, 1971. N.p." The Journal of Ecclesiastical History 24, no. 2 (1973): 218, https://doi.org/10.1017/S002204690005079X.
Citatione MLA (9a ed.)Ullmann, Walter. "John of Paris, On Royal and Papal Power. Translated with an Introd. by J. A. Watt. Pp. 262. Toronto: Pontifical Institute of Mediaeval Studies, 1971. N.p." The Journal of Ecclesiastical History, vol. 24, no. 2, 1973, p. 218, https://doi.org/10.1017/S002204690005079X.
