Alves R. R. & Santana G. G. Use and commercialization of Podocnemis expansa (Schweiger 1812) (Testudines: Podocnemididae) for medicinal purposes in two communities in North of Brazil : [англ.] // Journal of Ethnobiology and Ethnomedicine. — 2008. — Vol. 4, no. 3. — doi:10.1186/1746-4269-4-3. — PMID18208597.
Ferrara C. R., Vogt R. C., Sousa-Lima R. S.; Tardio B. M. R. & Bernardes V. C. D. Sound Communication and Social Behavior in an Amazonian River Turtle (Podocnemis expansa) : [англ.] // Herpetologica. — 2014. — Vol. 70, no. 2. — P. 149—156. — doi:10.1655/HERPETOLOGICA-D-13-00050R2.
Alves R. R. & Santana G. G. Use and commercialization of Podocnemis expansa (Schweiger 1812) (Testudines: Podocnemididae) for medicinal purposes in two communities in North of Brazil : [англ.] // Journal of Ethnobiology and Ethnomedicine. — 2008. — Vol. 4, no. 3. — doi:10.1186/1746-4269-4-3. — PMID18208597.