Kitapları
- ``Chariots of the Gods?`` (``Erinnerungen an die Zukunft``) (1968)
- ``Gods from Outer Space`` (1970)
- ``The Gold of the Gods`` (1972)
- ``In Search of Ancient Gods`` (1973)
- ``Miracles of the Gods`` (1974)
- ``Signs of the Gods`` (1979)
- ``Pathways to the Gods`` (1981)
- ``The Eyes of the Sphinx`` (1996)
- ``The Return of the Gods - Evidence of Extraterrestrial Visitations``. (1997)
- ``Odyssey of the Gods - An Alien History of Ancient Greece``. (2000)