Ness, Gordon E. (1991): The search for Calafia's Island; being a loose account of early Spanish explorations off Northwest Mexico and of certain myths pertaining to the region, with supplemental musings by the author. American Association of Petroleum Geologists, Tulsa, OK, United States, In: Dauphin, J. Paul (editor), Simoneit, Bernd R. T. (editor), The Gulf and Peninsular Province of the Californias, 47, 1-17, georefid:1995-057398