(1930). The review of metaphysics: A philosophical quarterly. Philosophy Education Soc..
Lua i Stíl Chicago (17ú heag.)The Review of Metaphysics: A Philosophical Quarterly. Washington: Philosophy Education Soc., 1930.
Lua MLA (8ú heag.)The Review of Metaphysics: A Philosophical Quarterly. Philosophy Education Soc., 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.