- Cărți electroniceThe Ufo Phenomenon and the Birth of the Jewish, Christian, and Muslim ReligionsRobert Iturralde
- Cărți electroniceEssay on the Theory of the EarthRobert Iturralde
- Cărți electroniceUfos, Teleportation, and the Mysterious Disappearance of Malaysian Airlines Flight #370Robert Iturralde
- Cărți electroniceA Treatise on Human NatureRobert Iturralde
- Cărți electroniceThe UFO Phenomenon and The Origin Of Mass ExtinctionsRobert Iturralde