RAHEEM, K.; UCHECHUKWU, N.; ODIRICHUKWU, E.; ONYEGBULAM, O. Placenta retention in the cow: Report of three cases. Sokoto Journal of Veterinary Sciences, [S. l.], v. 14, n. 2, p. 72–76, 2016. DOI: 10.4314/sokjvs.v14i2.11. Disponível em: https://www.ajol.info/index.php/sokjvs/article/view/145201. Acesso em: 13 nov. 2026.