Raz 1979, pp. 125–126. See Kelsen 1967, pp. 194–195: "It must be presupposed, because it cannot be 'posited,' that is to say: created, by an authority whose competence would have to rest on a still higher norm". Raz, Joseph (1979). "Kelsen's Theory of The Basic Norm". The authority of law: Essays on law and morality. Oxford University Press. pp. 122–145. doi:10.1093/acprof:oso/9780198253457.003.0007. ISBN9780198253457. Kelsen, Hans (1967) [1960]. Pure Theory of Law. Translated by Knight, Max (2 ed.). Berkeley: University of California Press.
Raz 1979, pp. 127, 132–133. See Kelsen 1967, p. 197: "The basic norm supplies only the reason for the validity, but not at the same time the content of the norms constituting the system". Raz, Joseph (1979). "Kelsen's Theory of The Basic Norm". The authority of law: Essays on law and morality. Oxford University Press. pp. 122–145. doi:10.1093/acprof:oso/9780198253457.003.0007. ISBN9780198253457. Kelsen, Hans (1967) [1960]. Pure Theory of Law. Translated by Knight, Max (2 ed.). Berkeley: University of California Press.
Notice biographique 1935, p. 193. Académie de droit international de La Haye (1935). "Notice biographique" [Biographical note]. Recueil des cours de l'Académie de droit international de la Haye (in French). 52 (II). Paris: Recueil Sirey: 193. Archived from the original on 18 May 2023. Retrieved 18 May 2023.
Mannoni 1999, p. 267, who is quoting from Verdross 1928, p. 314. Mannoni, Stefano (1999). Potenza e ragione. La scienza del diritto internazionale nella crisi dell'equilibrio europeo (1870–1914) [Power and reason. The science of international law in the crisis of the European equilibrium (1870-1914)]. Per la storia del pensiero giuridico moderno (in Italian). Vol. 54. Milano: Giuffré. ISBN88-14-07768-1. Verdross, Alfred (1928). "Le fondement du droit international" [The foundation of international law]. Recueil des cours de l'Académie de droit international de la Haye (in French). 16 (1927-I). Paris: Librairie Hachette: 247–323. Archived from the original on 13 March 2023. Retrieved 10 May 2023.
Simma 2018, p. 417. Simma, Bruno (2018). "Alfred Verdross (1890–1980)". In Kilian, Michael; Wolff, Heinrich Amadeus; Häberle, Peter (eds.). Staatsrechtslehrer des 20. Jahrhunderts: Deutschland – Österreich – Schweiz [Constitutional Law Scholars of the 20th Century: Germany - Austria - Switzerland] (in German). Berlin, Boston: De Gruyter. pp. 417–430. doi:10.1515/9783110546682-024. ISBN9783110546682. S2CID240387895. Archived from the original on 11 May 2023. Retrieved 11 May 2023.
Simma 2018, p. 417. Simma, Bruno (2018). "Alfred Verdross (1890–1980)". In Kilian, Michael; Wolff, Heinrich Amadeus; Häberle, Peter (eds.). Staatsrechtslehrer des 20. Jahrhunderts: Deutschland – Österreich – Schweiz [Constitutional Law Scholars of the 20th Century: Germany - Austria - Switzerland] (in German). Berlin, Boston: De Gruyter. pp. 417–430. doi:10.1515/9783110546682-024. ISBN9783110546682. S2CID240387895. Archived from the original on 11 May 2023. Retrieved 11 May 2023.
Raz 1979, pp. 125–126. See Kelsen 1967, pp. 194–195: "It must be presupposed, because it cannot be 'posited,' that is to say: created, by an authority whose competence would have to rest on a still higher norm". Raz, Joseph (1979). "Kelsen's Theory of The Basic Norm". The authority of law: Essays on law and morality. Oxford University Press. pp. 122–145. doi:10.1093/acprof:oso/9780198253457.003.0007. ISBN9780198253457. Kelsen, Hans (1967) [1960]. Pure Theory of Law. Translated by Knight, Max (2 ed.). Berkeley: University of California Press.
Raz 1979, pp. 127, 132–133. See Kelsen 1967, p. 197: "The basic norm supplies only the reason for the validity, but not at the same time the content of the norms constituting the system". Raz, Joseph (1979). "Kelsen's Theory of The Basic Norm". The authority of law: Essays on law and morality. Oxford University Press. pp. 122–145. doi:10.1093/acprof:oso/9780198253457.003.0007. ISBN9780198253457. Kelsen, Hans (1967) [1960]. Pure Theory of Law. Translated by Knight, Max (2 ed.). Berkeley: University of California Press.
Simma 2018, p. 417. Simma, Bruno (2018). "Alfred Verdross (1890–1980)". In Kilian, Michael; Wolff, Heinrich Amadeus; Häberle, Peter (eds.). Staatsrechtslehrer des 20. Jahrhunderts: Deutschland – Österreich – Schweiz [Constitutional Law Scholars of the 20th Century: Germany - Austria - Switzerland] (in German). Berlin, Boston: De Gruyter. pp. 417–430. doi:10.1515/9783110546682-024. ISBN9783110546682. S2CID240387895. Archived from the original on 11 May 2023. Retrieved 11 May 2023.
Laval n.d. Laval, Pierre-François (n.d.). "Alfred Verdross (1890–1980)". Société française pour le droit international. Galerie des internationalistes francophones (in French). Archived from the original on 2 March 2023. Retrieved 12 March 2023.
Simma 2018, p. 417. Simma, Bruno (2018). "Alfred Verdross (1890–1980)". In Kilian, Michael; Wolff, Heinrich Amadeus; Häberle, Peter (eds.). Staatsrechtslehrer des 20. Jahrhunderts: Deutschland – Österreich – Schweiz [Constitutional Law Scholars of the 20th Century: Germany - Austria - Switzerland] (in German). Berlin, Boston: De Gruyter. pp. 417–430. doi:10.1515/9783110546682-024. ISBN9783110546682. S2CID240387895. Archived from the original on 11 May 2023. Retrieved 11 May 2023.
Notice biographique 1935, p. 193. Académie de droit international de La Haye (1935). "Notice biographique" [Biographical note]. Recueil des cours de l'Académie de droit international de la Haye (in French). 52 (II). Paris: Recueil Sirey: 193. Archived from the original on 18 May 2023. Retrieved 18 May 2023.
Mannoni 1999, p. 267, who is quoting from Verdross 1928, p. 314. Mannoni, Stefano (1999). Potenza e ragione. La scienza del diritto internazionale nella crisi dell'equilibrio europeo (1870–1914) [Power and reason. The science of international law in the crisis of the European equilibrium (1870-1914)]. Per la storia del pensiero giuridico moderno (in Italian). Vol. 54. Milano: Giuffré. ISBN88-14-07768-1. Verdross, Alfred (1928). "Le fondement du droit international" [The foundation of international law]. Recueil des cours de l'Académie de droit international de la Haye (in French). 16 (1927-I). Paris: Librairie Hachette: 247–323. Archived from the original on 13 March 2023. Retrieved 10 May 2023.
Laval n.d. Laval, Pierre-François (n.d.). "Alfred Verdross (1890–1980)". Société française pour le droit international. Galerie des internationalistes francophones (in French). Archived from the original on 2 March 2023. Retrieved 12 March 2023.