The point is he was asking for specific books which makes sense. However there is no specific book for his question it was an image with no explanation of its meaning.
Now you can find this image in several books but the easier is on the cover of the book "Yoga" by Alain Danielou you can find this image online with a search.
Now look at the cover Ganesha is red and in the root chakra the color red is the R letter in Sanskrit kabala. Then you have Brahma in the navel, Brahma rules the letter A, Visnu in the solar, Visnu rules the letter U and Shiva in the heart and Shiva rules the letter M. Ganesh is also connected to Shiva as His son and here He is shown with His consort and this usually involves the son Ganesh the R. In the throat shows Sada Shiva which represents the element of Ather which is the A letter in Sanskrit Kabala the next chakra the solar disc is shown which is the symbol of the U letter in Sanskrit and the next the crown chakra, Shiva is placed in the crown Hinduism and Shiva is the letter M. This is how much you have to search thought with this stuff I wouldn't have known this is if I was not shown this and later I was shown the rest in different books. A lot of people wouldn't even understand that Sada Shiva and Brahma are the letter A. They don't understand the Tantra Traditions and their histories.
Further into Tantric images the left and right side and front and back are shown as male and female, literally one half God the other Goddess and the back and front as well. Then the letters that go with such.