: (1982) "The Ancient Kingdoms of Mexico", Penguin Books, London, 1990 printing, ISBN 0-14-013587-1.: (1978) "Classic Veracruz Grotesques and Sacrificial Iconography", in "Man", Vol.
* Davies, Nigel (1982) "The Ancient Kingdoms of Mexico", Penguin Books, London, 1990 printing, ISBN 0-14-013587-1.