Bibliograpohy
- http://incas.mrdonn.org/architecture.html-mathematician
- http://www.thelivingmoon.com/43ancients/02files/Pyramids_World_02.html-mathematician
- http://the-inca-block-d.wikispaces.com/Art,+Music+%26+Dance-mathematician
- http://enloehs.wcpss.net/projects/candc/merg/ememerg7/ememerg7.ht-historian
- http://www.britannica.com/EBchecked/topic/291855/Inti-historian
- http://info.handicraft-bolivia.com/Pachamama-Mother-Earth-a346-sm116-historian
- The Incas Author: Rosemary Rees-historian
- http://www.goddessaday.com/mayan/mama-cocha-historian
- http://ancientincareligion.weebly.com/rituals.html-historian
- http://library.eb.com.pgcmls.idm.oclc.org/levels/children-Archeoligists
- http://incas.mrdonn.org/geography.html-historian
- http://agutie.homestead.com/files/incas/inca_calendar.htm-historian
- http://incas.mrdonn.org/geography.html-historian
- http://agutie.homestead.com/files/incas/inca_calendar.htm-historian
- http://ic.galegroup.com/ic/whic/ReferenceDetailsPage/ReferenceDetailsWindowzid=bf3dd98047904fa6872f6173d833862a&action=2&catId=&documentId=GALE%7CCX3424400022&userGroupName=seat24826&jsid=2a346306b54fb8a28e38496240fd5b77-historian
- http://www.ducksters.com/history/inca/daily_life.php-historian
- http://www.ducksters.com/history/inca/timeline_of_the_inca_empire.php-historian
- http://quipuapps.com/what-is-a-quipu/-mathematician
- http://en.wikipedia.org/wiki/Incan_agriculture#Farming_tools-mathematician
- http://www.ask.com/question/inca-tools-Mathmatician
- http://incas.mrdonn.org/llamalegends.html - historian
- http://www.wheatmedia.com/inca/instruments.html-mathematician