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Lua i Stíl Chicago (17ú heag.)Models: Electric and Magnetic Interactions. Chicago: Rand McNally, 1971.
Lua MLA (9ú heag.)Models: Electric and Magnetic Interactions. Rand McNally, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.