Holovachov, Oleksandr. “Swedish Plectida (Nematoda). Part 8. The Genus Onchium Cobb, 1920”. Zootaxa 3911, no. 4 (January 21, 2015): 521–546. Accessed May 1, 2025. https://mapress.com/zt/article/view/zootaxa.3911.4.3.