Winter, A. J. de. (2017). "Dwarfs among pygmies": the genus Punctum in western Africa and the Congo Basin, with descriptions of two new species and notes on other Afrotropical punctoids (Gastropoda: Eupulmonata: Punctidae). Archiv für Molluskenkunde. 146(2): 203-211.
"Dwarfs among pygmies": the genus <i>Punctum</i> in western Africa and the Congo Basin, with descriptions of two new species and notes on other Afrotropical punctoids (Gastropoda: Eupulmonata: Punctidae)