Lange, E. (1914). Die Brachiopoden, Lamellibranchiaten und Anneliden der <em>Trigonia Schwarzi</em>-Schichten. <em>Archiv für Biontologie.</em> 3: 187-289. page(s): 230, pl. 20, fig. 2 [details]
MolluscaBase eds. (2025). MolluscaBase. Trigonia krenkeli E. Lange, 1914 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=932537 on 2025-05-19
Marine Species Traits editorial board (2025). Marine Species Traits. Trigonia krenkeli E. Lange, 1914 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=932537 on 2025-05-19
original descriptionLange, E. (1914). Die Brachiopoden, Lamellibranchiaten und Anneliden der <em>Trigonia Schwarzi</em>-Schichten. <em>Archiv für Biontologie.</em> 3: 187-289. page(s): 230, pl. 20, fig. 2 [details]