His The lithic artifacts of La Libertad, Chiapas, Mexico, 1988: t.p. (John E. Clark)

The political economy of ancient Mesoamerica, 2007: eCIP t.p. (John E. Clark) data view (prof. of anthropology, Brigham Young Univ.; dir., New World Archaeological Foundation; b. Jan. 16, 1952)

Univ. of Michigan library online catalog, 28 June 2007 (hdg.: Clark, John Edward; Ph.D., 1994)

Brigham Young University anthropology dept. web site, 1 July 2007 (John E. Clark; M.A., Brigham Young University; Ph.D., University of Michigan, 1994; research focuses on the origins of rank society in lowland Mesoamerica as well as cultural theory, ethnoarchaeology, ancient technology and craft specialization; directory of New World Archaeological Foundation, Chiapas)

OCLC database, 1 July 2007 (hdgs.: Clark, John E., Clark, John Edward; usage: Clark, John E.)