¿Quién soy?, 2013: title page (Istvansch)

Argentina Alfaguara Infantil WWW page 9 October 2014: Istvansch (Istvansch (Istvan Schritter) b. 1968 in Madrid, lives in Buenos Aires and he considers himself a Santafecino, from the city of San Jorge by adoption; illustrator, designer, and writer of his own texts; some ofhis books include El ratón más famoso, Ideas claras de Julito enamorado, Todo el dinero del mundo, Federica aburrida and Abel regala soles; with María Teresa Andruetto, he developed Trenes and La durmiente; has won literary awards)

Abel regala soles, © 2009: title page (Istvansch) de portada

Biblioteca del congreso (Estados Unidos), 12 marzo 2020: Catálogo electrónico http://bit.ly/2QcVb7z