Observations on the Inca and Yunga Nations; their early Remains; and on Ancient Peruvian Skulls. Proceedings of the Society of Antiquaries of Scotland, [S. l.], v. 5, p. 34–46, 1864. DOI: 10.9750/PSAS.005.34.46. Disponível em: https://soas-test.journals.ed.ac.uk/index.php/psas/article/view/5104. Acesso em: 1 oct. 2025.