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Lua i Stíl Chicago (17ú heag.)Vol. 43, № 3; Analytical Chemistry. 1971, 1971.
Lua MLA (9ú heag.)Vol. 43, № 3; Analytical Chemistry. 1971, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.