Mallea Olaetxe, J., 1988, Juan Zumarraga, bishop of Mexico and the basques. The ethnic connection, Reno: Unibertsitatea. GI-05; BI-01; AR-08 Gako-hitzak: Euskaltzaleak; Nortasuna [Talde -]; Zumarraga, Frai Joan
Mallea-Olaetxe, J., 1992, "The private Basque World of Juan Zumarraga, firts Bishop of Mexico", Revista de Historia de América (IPGH, México) 114, 1992, 41-60. Gako-hitzak: Zumarraga, Frai Joan; Erabilera [Euskararen -]; Mexiko