Williams, E. T., & Nicolls, C. S. (1981). The Dictionary of National Biography: Twenthieth Century: Ed. by E[dgar] Trevor] Williams and C[hristine] S[tephanie] Nicholls. Oxford Univ. Press.
Lua i Stíl Chicago (17ú heag.)Williams, Edgar Trevor, agus Christine Stephanie Nicolls. The Dictionary of National Biography: Twenthieth Century: Ed. by E[dgar] Trevor] Williams and C[hristine] S[tephanie] Nicholls. Oxford: Oxford Univ. Press, 1981.
Lua MLA (8ú heag.)Williams, Edgar Trevor, agus Christine Stephanie Nicolls. The Dictionary of National Biography: Twenthieth Century: Ed. by E[dgar] Trevor] Williams and C[hristine] S[tephanie] Nicholls. Oxford Univ. Press, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.