| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| All Religions Are Cults: And What a Few Good Priests, Monks, Rabbis and Mullahs Can Do About It | 978-1-4495-5355-5 (1-4495-5355-9) | 2009 |
| I Giochi SIGNOR: Sport Integrati e Giochi delle Nazioni, Organizzazioni e Religioni | 978-1-4774-9314-4 (1-4774-9314-X) | 2012 |