Não informado. (1958). Soviet Soil Science. Scripta Technica.
Lua i Stíl Chicago (17ú heag.)Não informado. Soviet Soil Science. Silver Spring, Md: Scripta Technica, 1958.
Lua MLA (8ú heag.)Não informado. Soviet Soil Science. Scripta Technica, 1958.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.