Freire-Maia, A؛ Opitz، John M. (1981). "Historical note: the extraordinary handless and footless families of Brazil - 50 years of acheiropodia". American Journal of Medical Genetics. ج. 9 ع. 1: 31–41. DOI:10.1002/ajmg.1320090108. PMID:7018242.
Freire-Maia, A؛ Opitz، John M. (1981). "Historical note: the extraordinary handless and footless families of Brazil - 50 years of acheiropodia". American Journal of Medical Genetics. ج. 9 ع. 1: 31–41. DOI:10.1002/ajmg.1320090108. PMID:7018242.