| title | media type | | ISBN-13 | year of publica-
tion | other author(s) |
|---|
| Charting the Times of Your Life: Your Birthday - And the Power It Holds for You Every Day | Paperback | | 978-0-7434-6049-1 | 2004 |
| Das Geburtstagsbuch: Botschaften der Sterne für jeden Tag | Gebunden | | 978-3-89996-513-1 | 2006 | Joost Elfers |
| Die geheime Sprache der Beziehungen in Liebe, Freundschaft und Beruf. | " | | 978-3-7701-4610-9 | 2000 |
| Gary Goldschneider's Everyday Astrology: How to Make Astrology Work for You | Paperback | | 978-1-59474-408-2 | 2009 |
| Personology | Hardcover | | 978-0-7624-2229-6 | 2005 |
| Personology. Il libro segreto della fortuna | Copertina flessibile | | 978-88-384-6653-3 | 2005 |
| Secret Language of Birthdays Relationship Workbook and Birthday Keeper | Hardcover | | 978-0-670-88183-3 | 1998 | Joost Elffers |
| The Astrology of Time | " | | 978-0-7434-5693-7 | 2002 |
| The Secret Language of Birthdays: Personology Profiles for Each Day of the Year | " | | 978-1-86204-416-6 | 1998 | Joost Elffers |
| The Secret Language of Birthdays: Personology Profiles For Each Day of the Year | " | | 978-0-7181-3923-0 | 1995 |
| The Secret Language of Birthdays: Personology Profiles for Each Day of the Year | " | | 978-0-670-85857-6 | 1994 | Joost Elffers |
| The Secret Language of Birthdays: Teen Edition | " | | 978-1-59514-232-0 | 2010 | Alicia Thompson · Joost Elffers |
| The Secret Language of Birthdays: Unique Personality Profiles for Every Day of the Year | " | | 978-0-00-719130-7 | 2004 | Joost Elffers |
| The Secret Language of Birthdays: Your Complete Personology Guide for Each Day of the Year | Paperback | | 978-0-525-42688-2 | 2013 | " |
| The Secret Language of Birthdays: Your Complete Personology Guide for Each Day of the Year | Hardcover | | 978-0-670-03261-7 | 2003 | " |
| The Secret Language of Destiny: A Complete Personology Guide to Finding Your Life Purpose | " | | 978-0-670-03263-1 | 2003 | " |
| The Secret Language of Destiny: A Personology Guide to Finding Your Life Purpose | " | | 978-0-670-88597-8 | 1999 | " |
| The Secret Language of Luck | Paperback | | 978-1-59448-023-2 | 2004 |
| The Secret Language of Relationships | Hardcover | | 978-0-670-03262-4 | 2003 | Joost Elffers |
| The Secret Language of Relationships: Your Complete Personology Guide to Any Relationship with Anyone | Paperback | | 978-0-525-42687-5 | 2013 | " |
| The Secret Language of Relationships: Your Complete Personology Guide to Any Relationship with Anyone | Hardcover | | 978-0-670-87527-6 | 1997 | " |
| Wie du dir die Astrologie jeden Tag zunutze machst: Was uns die Sterne über unsere Mitmenschen verraten | Gebunden | | 978-3-8105-0879-9 | 2010 |