Coca, la hoja sagrada de los incas
Autor:Chacón Rosasco, CésarThe royal commentaries of the Incas
Autor:Garcilaso de la Vega, IncaBirds of Cusco and Machu Picchu = Aves del Cusco y Machu Picchu
Autor:Chacón Rosasco, César; Bardález Zambrano, Gretel