Stothert, Karen E. The Preceramic Las Vegas Culture of Coastal Ecuador. American Antiquity (American Antiquity, Vol. 50, No. 3). July 1985, 50 (3): 613–637. JSTOR 280325. S2CID 162313695. doi:10.2307/280325.
Ubelaker, Douglas H. Human Skeletal Remains From Site OGSE-80, A Preceramic Site on the Sta. Elena Peninsula, Coastal Ecuador. Journal of the Washington Academy of Sciences. 1980, 70 (1): 3–24.