Garcilasso de la Vega el Ynca:

1869-71.

Royal Commentaries of the Yncas.
Edited by Sir Clements Markham for the Hakluyt Society. London.

Hodge, F. W.:

1897.

Bandelier's researches in Peru and Bolivia.
Am. Anth. X, 1897, pp. 303-316.

Hrdlicka, Ales:

1914.

Anthropological Work in Peru in 1913.
Smith. Misc. Pub. LXI, #18. Washington.

Icazbalceta, Joaquin García: