Cáceres, Natalia (2011) “sumaa”, inGrammaire Fonctionnelle-Typologique du Ye’kwana[1], Lyon
Hall, Katherine Lee (1988)The morphosyntax of discourse in De'kwana Carib, volumes I and II, Saint Louis, Missouri: PhD Thesis, Washington University, pages227, 398: “[ṣ̌u:mạdï] 'suck, kiss'[…] shu:madü 'to kiss, suck'[…] shu:madü - to suck, to nurse”