Scholze, V. S., and W. Sudhaus. “A Pictorial Key to Current Genus Groups of ‘Rhabditidae’”. Journal of Nematode Morphology and Systematics, vol. 14, no. 2, Dec. 2012, pp. J. Nematode Morphol. Syst., 14 (2): 105-112 (2011), https://revistaselectronicas.ujaen.es/index.php/jnms/article/view/809.