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Lua i Stíl Chicago (17ú heag.)Verdonk, Nicolaas Hendrikus. Morphogenesis of the Head Region in Limnaea Stagnalis L. Nijmegen: Thoben Offset, 1965.
Lua MLA (8ú heag.)Verdonk, Nicolaas Hendrikus. Morphogenesis of the Head Region in Limnaea Stagnalis L. Thoben Offset, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.