I am the author of 25 ebooks (technical and fiction) in both English and Spanish. I have also written 20+ ebooks for other authors on different subjects. I can provide both the authoring or the generation of the ebook, or both. I do work with multiple formats (epub, MOBI, etc.). You can find my own books at https://www.amazon.com/Ramón-Somoza/e/B00E21I2Q2/