WENNER, M. W. (1991). The Yemen Arab Republic: Development and change in anancient land. Westview.
Lua i Stíl Chicago (17ú heag.)WENNER, Manfred W. The Yemen Arab Republic: Development and Change in Anancient Land. Boulder: Westview, 1991.
Lua MLA (9ú heag.)WENNER, Manfred W. The Yemen Arab Republic: Development and Change in Anancient Land. Westview, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.