Não informado. (1981). Soviet Engineering Research. Production Engineering Research Association.
Lua i Stíl Chicago (17ú heag.)Não informado. Soviet Engineering Research. Melton Mowbray, Inglaterra: Production Engineering Research Association, 1981.
Lua MLA (8ú heag.)Não informado. Soviet Engineering Research. Production Engineering Research Association, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.