Não informado. (1978). Agricultural Reviews and Manuals. Science and Education Administration.
Lua i Stíl Chicago (17ú heag.)Não informado. Agricultural Reviews and Manuals. Berkeley, Calif: Science and Education Administration, 1978.
Lua MLA (8ú heag.)Não informado. Agricultural Reviews and Manuals. Science and Education Administration, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.