Oliver, T. L. D.D.R. collectors reference guides 1949-1990.
Lua i Stíl Chicago (17ú heag.)Oliver, Tony L. D.D.R. Collectors Reference Guides 1949-1990.
Lua MLA (8ú heag.)Oliver, Tony L. D.D.R. Collectors Reference Guides 1949-1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.