Pedraza Ordóñez, F. J. ., G. . Ferreira De La Cuesta, and S. M. . Murillo Menjura. “Clinical and Pathological Description of 124 Cases of Canine Mammary Gland Neoplasm in Manizales, Colombia”. Revista Veterinaria Y Zootecnia (On Line), vol. 2, no. 2, Dec. 2008, pp. 21-28, https://revistasojs.ucaldas.edu.co/index.php/vetzootec/article/view/5718.