Não informado. (1953). Technical journal of the brush group limited. Hawker Siddeley Group.
Lua i Stíl Chicago (17ú heag.)Não informado. Technical Journal of the Brush Group Limited. London: Hawker Siddeley Group, 1953.
Lua MLA (8ú heag.)Não informado. Technical Journal of the Brush Group Limited. Hawker Siddeley Group, 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.