Title: The Italian Word Search Book: 4075 Words Puzzle with Large Print. Learning Italian for Beginners with 163 Puzzles for Adults to Achieve Healthy Mind, Author: Aria Capri Publishing
Title: È l'enigmistica, bellezza, Author: Ennio Peres
Title: Incipit - Un gioco dinamico di narrativa estemporanea e letteratura arbitraria, Author: Gianni Bonetti