Erkiaga, Eusebio. «ABLO ERMIN RIGARAY OIZUETA “Larreko” (1869-1969)». EGAN 30, no. 1-3 (azaroak 1, 2021). skuratua uztailak 23, 2024. http://rsbap.org/index.php/egan/article/view/3914.