Markaz al-Qawmi lil-I`lam wa-al-Tawthiq. (1970). United Arab Republic journal of soil science. National Information and Documentation Centre.
Lua i Stíl Chicago (17ú heag.)Markaz al-Qawmi lil-I`lam wa-al-Tawthiq. United Arab Republic Journal of Soil Science. Cairo, U.A.R.: National Information and Documentation Centre, 1970.
Lua MLA (8ú heag.)Markaz al-Qawmi lil-I`lam wa-al-Tawthiq. United Arab Republic Journal of Soil Science. National Information and Documentation Centre, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.