G.C. Vaillant, The Aztecs of Mexico (Harmondsworth: Pelican, 1950); Walter Krickeberg, Altmexicanische Kulturen (Berlin: Safari Verlag, 1956); J.Eric Thompson, The Rise and Fall of Maya Civilization (Norman, Okla.: University of Oklahoma Press, 1954), pp.84-130; J.Alden Mason, The Ancient Civilizations of Peru (Harmondsworth: Pelican Books, 1957), pp.93-230; Hans Dietrich Diesselhoff, Geschichte der Altamerikanischen Kulturen (Munich: Verlag R.Oldenberg, 1953), pp.76-201, 303-48.
