Löfgren, N. (1948). Studies on local anesthetics: Xylocaine, a new synthetic drug. Ivar HŒggströms.
Lua i Stíl Chicago (17ú heag.)Löfgren, Nils. Studies on Local Anesthetics: Xylocaine, a New Synthetic Drug. Stockholm: Ivar HŒggströms, 1948.
Lua MLA (8ú heag.)Löfgren, Nils. Studies on Local Anesthetics: Xylocaine, a New Synthetic Drug. Ivar HŒggströms, 1948.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.