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Lua i Stíl Chicago (17ú heag.)Oreffo, R., S. Bord, agus J. Triffitt. Skeletal Progenitor Cells and Ageing Human Populations. 1998.
Lua MLA (9ú heag.)Oreffo, R., et al. Skeletal Progenitor Cells and Ageing Human Populations. 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.