BENTLEY, R. (1992). Research and technology in the former German DemocraticRepublic. Westview.
Lua i Stíl Chicago (17ú heag.)BENTLEY, Raymond. Research and Technology in the Former German DemocraticRepublic. Boulder: Westview, 1992.
Lua MLA (9ú heag.)BENTLEY, Raymond. Research and Technology in the Former German DemocraticRepublic. Westview, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.