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Eurekalert.orgArchived 2017-12-13 at the Wayback Machine, "Oldest evidence of city life in the Americas reported in Science, early urban planners emerge as power players" Public release date: 26-Apr-2001 American Association for the Advancement of Science
Stothert, Karen E. (July 1985). "The Preceramic Las Vegas Culture of Coastal Ecuador". American Antiquity. 50 (3): 613–637. doi:10.2307/280325. JSTOR280325. S2CID162313695.
Stothert, Karen E. (July 1985). "The Preceramic Las Vegas Culture of Coastal Ecuador". American Antiquity. 50 (3): 613–637. doi:10.2307/280325. JSTOR280325. S2CID162313695.
Eurekalert.orgArchived 2017-12-13 at the Wayback Machine, "Oldest evidence of city life in the Americas reported in Science, early urban planners emerge as power players" Public release date: 26-Apr-2001 American Association for the Advancement of Science