(1992). Myths And Science Of Soils Of The Tropic. SSSA.
Lua i Stíl Chicago (17ú heag.)Myths And Science Of Soils Of The Tropic. SSSA, 1992.
Lua MLA (8ú heag.)Myths And Science Of Soils Of The Tropic. SSSA, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.