JUNGERIUS, P. (1985). Soil and geomorphology. Catena Verlag.
Lua i Stíl Chicago (17ú heag.)JUNGERIUS, P.D. Soil and Geomorphology. Cremlingen: Catena Verlag, 1985.
Lua MLA (9ú heag.)JUNGERIUS, P.D. Soil and Geomorphology. Catena Verlag, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.