Bruggen, A. C. van. (2011). Northern Drakensberg range Gulella species (Gastropoda, Pulmonata, Streptaxidae): Gulella inobstructa van Bruggen, 1965, revisited, or types are not typical. African Invertebrates. 52(1): 11–19.
Northern Drakensberg range <i>Gulella</i> species (Gastropoda, Pulmonata, Streptaxidae): <i>Gulella inobstructa</i> van Bruggen, 1965, revisited, or types are not typical.