BioStor
 | Studies in the Achatininae, a group of African land snails J C Bequaert (1950) Bulletin of the Museum of Comparative Zoology, Harvard 105: 1-216 |
 | Comparative genital anatomy of some African Achatinidae (Pulmonata), A R Mead (1950) Bulletin of The Museum of Comparative Zoology 105: 219-291 |