Tasa, A. (1998). Biological leaching of shales: Black shale and oil shale. Tartu University Press.
Lua i Stíl Chicago (17ú heag.)Tasa, Andrus. Biological Leaching of Shales: Black Shale and Oil Shale. Tartu: Tartu University Press, 1998.
Lua MLA (8ú heag.)Tasa, Andrus. Biological Leaching of Shales: Black Shale and Oil Shale. Tartu University Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.