Bern Ronda · Bryan Renaud · Rhonda Byrne
| title | ISBN-13 | year of publication |
|---|---|---|
| Bohater | 978-83-7818-630-4 | 2014 |
| El Secreto | 978-84-7953-644-2 | 2007 |
| Sekret | 978-83-7534-088-4 | 2010 |
| Sekret Magia | 978-83-7534-074-7 | 2015 |
| Sekret. Tom 2. Sila | 978-83-7534-030-3 | 2012 |
| The Secret Nauki na kazdy dzien | 978-83-7818-730-1 | 2015 |
Nowa Proza · Rebis · Urano