Oselskaya Е. Geopolitical Analysis of International Unions and Alliances: Historical Aspect. Public Administration and Civil Service, Нур-Султан, Казахстан, n. 2, p. 96–104, 2015. Disponível em: https://journal.apa.kz/index.php/path/article/view/580. Acesso em: 1 dec. 2025.