Przemysław Saganek, Unilateral Acts of States in Public International Law, Brill Nijhoff, Leiden, Boston: 2015, pp. 662 ISBN 978-90-04-27460-0. Polish Yearbook of International Law, [S. l.], v. 35, p. 343–350, 2016. DOI: 10.7420/pyil2015m. Disponível em: https://czasopisma.inp.pan.pl/index.php/pyil/article/view/2496. Acesso em: 3 oct. 2025.