Great chess players of Costa Rica
Piza Volio, E. (2024). Great chess players of Costa Rica. Libro (687 pág.) de la Editorial Mnemosyne-CR, San José, Costa Rica/Orlando, Florida, USA. ISBN 9798304522175.
Solving chess problems with chess engines
Piza Volio, E. (2023). Solving chess problems with chess engines. Libro (49 pág.) de la Editorial Mnemosyne-CR, San José, Costa Rica. ISBN 9798861927024.