Muller, M. M. (2015). A spectre is haunting Arabia: How the Germans brought their communism to Yemen. Transcript Verlag.
Lua i Stíl Chicago (17ú heag.)Muller, Miriam M. A Spectre Is Haunting Arabia: How the Germans Brought Their Communism to Yemen. Bielefeld, Germany: Transcript Verlag, 2015.
Lua MLA (9ú heag.)Muller, Miriam M. A Spectre Is Haunting Arabia: How the Germans Brought Their Communism to Yemen. Transcript Verlag, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.