Wilbert, J. 1959. Zur Kenntnis der Yabarana. Caracas: Antropológica, suplemento 1.
@book{wilbert1959b, author = {Wilbert, J.}, key = {Wilbert (1959b)}, publisher = {Caracas: Antropológica, suplemento 1}, title = {Zur Kenntnis der Yabarana}, year = {1959} }