PRUITT, JR., William O. Clarification of some api characteristics in relation to caribou (Rangifer tarandus). Rangifer, Tromsø, Norway, v. 10, n. 3, p. 133–137, 1990. DOI: 10.7557/2.10.3.843. Disponível em: https://septentrio.uit.no/index.php/rangifer/article/view/843. Acesso em: 22 apr. 2026.