Não informado. (1969). Utrecht micropaleontological bulletins. State University of Utrecht, Department of Stratigraphy and Paleontology.
Lua i Stíl Chicago (17ú heag.)Não informado. Utrecht Micropaleontological Bulletins. Utrecht, Holanda: State University of Utrecht, Department of Stratigraphy and Paleontology, 1969.
Lua MLA (8ú heag.)Não informado. Utrecht Micropaleontological Bulletins. State University of Utrecht, Department of Stratigraphy and Paleontology, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.