Hill, B. J. (1963). Contributions to the morphology and histology of the tectibranch Berthella granulata (Krauss). [University of Stellenbosch].
Lua i Stíl Chicago (17ú heag.)Hill, B. J. Contributions to the Morphology and Histology of the Tectibranch Berthella Granulata (Krauss). Stellenbosch: [University of Stellenbosch], 1963.
Lua MLA (8ú heag.)Hill, B. J. Contributions to the Morphology and Histology of the Tectibranch Berthella Granulata (Krauss). [University of Stellenbosch], 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.