"Insectos en la Iconografía Inka" - Willy F. Vargas-Musquipa (1995)
"An Overview of Chachapoya Archaeology and History" - Adriana Von Hagen (2008)
"Report on an Andean Expedition" - Alan R. Sawyer (1956)
La Frontera del Estado Inca - Tom D. Dillehay, Patrycia Netherly (1998)
The Body of Meaning in Chavín Art - Gary Urton (2008)
The architecture at the Monumental Center of Chavín de Huántar: Sequence, Transformations, and Chronology- Silvia R. Kembel (2008).pdf
