BORISOVA, Ekaterina. HALFORD MACKINDER’S IDEAS TODAY. CENTRAL ASIA AND THE CAUCASUS, Delhi, India, v. 6, n. 4, p. 21–23, 2005. Disponível em: http://13.200.237.241/CAC/index.php/cac/article/view/806.. Acesso em: 9 jan. 2025.