Sorry I don't know about astrology literature where I can recommend. As I know there are many types of astrology based of various factors such as teachers, country ...ect.
I don’t specifically know about Karmic Astrology but the work of Liz Greene is pretty interesting. She’s an astrologer and a Jungian analyst. She wrote many articles and books about Psychological Astrology. She’s quite a reference in this field and personally, I find her work and analysis very interesting.
i read here books also. And i find her work also intereresting