Regnéll, G. (1945). Non-crinoid Pelmatozoa from the Paleozoic of Sweden: A taxonomic study. Carl Blom.
Lua i Stíl Chicago (17ú heag.)Regnéll, Gerhard. Non-crinoid Pelmatozoa from the Paleozoic of Sweden: A Taxonomic Study. Lund: Carl Blom, 1945.
Lua MLA (8ú heag.)Regnéll, Gerhard. Non-crinoid Pelmatozoa from the Paleozoic of Sweden: A Taxonomic Study. Carl Blom, 1945.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.