Não informado. (1961). APL Technical Digest. Johns Hopkins University, Applied Physics Laboratory.
Lua i Stíl Chicago (17ú heag.)Não informado. APL Technical Digest. Silver Spring, Md: Johns Hopkins University, Applied Physics Laboratory, 1961.
Lua MLA (8ú heag.)Não informado. APL Technical Digest. Johns Hopkins University, Applied Physics Laboratory, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.