Pholyotha, A., Sutcharit, C., Panha, S. (2023). Taxonomic revision of the land-snail genus Holkeion Godwin-Austen, 1908 (Eupulmonata: Ariophantidae), with a description of a new species, H. nordsiecki. Archiv für Molluskenkunde. 152(2): 269-280. [13 December].
Taxonomic revision of the land-snail genus Holkeion Godwin-Austen, 1908 (Eupulmonata: Ariophantidae), with a description of a new species, H. nordsiecki