^Guillermo Cutipa Añamuro, Chacra qarpaña: Regando la chacra, IECTA, Iquique - Chile 2005, p. 26
^Christine Franquemont, Timothy Plowman, Edward Franquemont, Steven R. King, Christine Niezgoda, Wade Davis, Calvin R. Sperling (1990), The Ethnobotany of Chinchero, an Andean Community in Southern Peru. Fieldiana Botany, New Series No. 24, 1-126.
^escale.minedu.gob.pe - UGEL map of the La Unión Province (Arequipa Region)