GULANOWSKI, P. . Robert Ervin Howard’s Vision of the Supernatural in Beyond the Black River. Journal of Education Culture and Society, [S. l.], v. 4, n. 2, p. 340–349, 2020. DOI: 10.15503/jecs20132.340.349. Disponível em: https://ogrodynauk.pl/index.php/jecs/article/view/759. Acesso em: 29 apr. 2024.