Het wezenlijke is voor het oog onzichtbaar
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1 All books written by Karen Hamaker-Zondag, my first teacher. 
2 Books by Liz Greene, for instance Apollo’s Chariot- The Meaning of the Astrological Sun
3 Demetra George, Astrology and the Authentic Self: ” This book provides a model for the practicing astrologer to analyze a client’s life purpose as indicated through the natal chart. It addresses significant concerns, such as relationship and vocation and provides methods for determining current timing movements. She gives the methods to communicate this complex information in a concise and professional manner within the context of an astrological counseling session.”
4 Darby Costello, especially The Astrological Moon.
5 Geoffrey Cornelius, The Moment of Astrology: “The subject of the book is the philosophy of astrology, and in it Cornelius traces the history of the subject in order to argue that the true origins of astrology are in divination, and that the practice of the subject itself can only make sense within that context.”
6 Rafael Nasser, Under One Sky: twelve experts on astrology representing twelve different astrological traditions interpret the same natal chart, blind.
7 Richard Idemon, Through the Looking Glass, a search for the self in the mirror of relationships.
8 Bernadette Brady, all her books but especially Brady’s Book of Fixed Stars, an extra layer in your chart.
9 Richard Tarnas, as above, so below Cosmos and Psyche.
10 Rob Hand, Chronology of the Astrology of the Middle East and the West by Period, Project Hindsight.