- eBookThe Ufo Phenomenon and the Birth of the Jewish, Christian, and Muslim ReligionsRobert Iturralde
- eBookEssay on the Theory of the EarthRobert Iturralde
- eBookA Treatise on Human NatureRobert Iturralde
- eBookUfos, Teleportation, and the Mysterious Disappearance of Malaysian Airlines Flight #370Robert Iturralde
- eBookThe UFO Phenomenon and The Origin Of Mass ExtinctionsRobert Iturralde