REGAN, Robert. Mark Twain, "The Doctor" and a guidebook by Dickens. American Studies, [S. l.], v. 22, n. 1, p. 35–55, 1981. DOI: 10.1353/amsj.v22i1.2634. Disponível em: https://journals.ku.edu/amsj/article/view/2634.. Acesso em: 4 may. 2024.