Jaikuaami Guarani : conozcamos Guaraní. Manual präctico para el aprendizaje de la Lengua Guaraní -- 3rd ed.
Lecoski, Dionisio Fleitas, 2005.
This resource is in Guarani and Spanish, consisting of 22 study units, with exercises and grammar notes.
Soundrecordings (for lessons 12-19 only) on CD.
GUARANI CBEG 1; GUARANI CBEG 1:12-19(CD) Open access