ROMAIN, W. F. Observations Concerning the Milky Way, Serpent Mound, Newark and Mound City Earthworks. Journal of Skyscape Archaeology, [S. l.], v. 8, n. 1, p. 120–130, 2022. DOI: 10.1558/jsa.23698. Disponível em: https://journal.equinoxpub.com/JSA/article/view/23698. Acesso em: 8 feb. 2023.