Artola Kortajarena, K. 2015. Erroibarko aldaeraren inguruan (1 – Ipar Erroibarko mintzairak) [About the variety spoken in Erroibar/about the Erro Valley variety (1 – the speech of the north of the valley)]. Fontes Linguae Vasconum. 120 (Dec. 2015), 229-275. DOI:https://doi.org/10.35462/flv120.1.