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1
Publicado en: Portraits of Basques in the New World / edited by Richard W. Etulain and Jeronima Echeverria , Reno : University of Nevada Press, 1999, p. 141-152
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2
Publicado en: Portraits of Basques in the New World / edited by Richard W. Etulain and Jeronima Echeverria , Reno : University of Nevada Press, 1999, p. 97-113
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3
Publicado en: Social economy and social participation : the ways of the Basques , Donostia-San Sebastián : Gezki ; Madrid : Marcial Pons, D.L. 1996, p. 247-256