Joost Elffers · nonfiction series
The Secret Language books in order
A reference series applying astrology and personology to birthdays, relationships, destiny, and teenage life.
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Reading order
Only reading orders present in the catalog are shown. Optional novellas and companion works can be hidden without changing the underlying sequence.
Publication order
- 1
The Secret Language of Birthdays: Personology Profiles for Each Day of the YearAmazon ↗Book 1 · reference · 1994
- 2
The Secret Language of Relationships: Your Complete Personology Guide to Any Relationship with AnyoneAmazon ↗Book 2 · reference · 1997
- 3
The Secret Language of Destiny: A Personology Guide to Finding Your Life PurposeAmazon ↗Book 3 · reference · 1999
- 4
The Secret Language of Birthdays: Teen EditionAmazon ↗Book 4 · young adult reference · 2010 Optional