Fallding, H.1964. The source and burden of civilization illustrated in the use of alcohol. Quarterly Journal of Studies on Alcohol, Vol. 25, no. 4: 714-725.
2.
Karsten, R.1923. The Toba Indians of the Bolivian Gran Chaco. Acta Academiae Aboensis. Humaniora 4.
3.
Susnik, B.1968. Chiriguanos. I. Dimensiones etnosociales. Asuncion, Paraguay: Ethnographic Museum "Andrés Barbero".
4.
Métraux, A.1946. Myths of the Toba and Pilaga Indians of the Gran Chaco . Philadelphia, American Folklore Society, 86, 97.
