|Grubb, W. Barbrooke (Wilfred Barbrooke), 1865-1930.||An unknown people in an unknown land: an account of the life and customs of the Lengua Indians of the Paraguayan Chaco, with adventures and experiences during twenty years' pioneering and exploration amongst them S1 E1||1911|
|Hawtrey, S. H. C.||The Lengua Indians of the Paraguayan Chaco||1901|
|Kidd, Stephen W.||Knowledge and the practice of love and hate among the Enxet of Paraguay||2000|
|Kidd, Stephen W.||Land, politics and benevolent shamanism: the Enxet Indians in a democratic Paraguay||1995|
|Kidd, Stephen W.||Love and hate among the people without things: the social and economic relations of the Enxet people of Paraguay||1999|
|Loewen, Jacob A. (Jacob Abram), 1922-.||Lengua Indians and their "innermost"||1966|
|Loewen, Jacob A. (Jacob Abram), 1922-.||Lengua festivals and functional substitutes||1967|
|Skoggard, Ian A., 1953-.||Culture summary: Enxet and Enlhet||2020|
S1 -- Considered a match for the Standard Cross Cultural Sample (SCCS).
E1 -- Considered a match for the Ethnographic Atlas (EA).