Lua APA (7ú heag.)

Beede, J. W., & Kniker, H. T. (1924). Species of the genus Schwagerina and their stratigraphic significance. The University.

Lua i Stíl Chicago (17ú heag.)

Beede, J. W., agus Hedwig Thusnelda Kniker. Species of the Genus Schwagerina and Their Stratigraphic Significance. Austin, Tex.: The University, 1924.

Lua MLA (8ú heag.)

Beede, J. W., agus Hedwig Thusnelda Kniker. Species of the Genus Schwagerina and Their Stratigraphic Significance. The University, 1924.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.