Schlaghamerský, Jiří, and Lee E. Frelich. “First Records of Parergodrilus Heideri (Annelida: ‘Polychaeta’) from North America”. Zootaxa 3498, no. 1 (September 26, 2012): 81–86. Accessed April 18, 2025. https://mapress.com/zt/article/view/zootaxa.3498.1.5.