John Herman Randall, J. J. B. E. U. S. Readings in philosophy. Barnes Noble.
Lua i Stíl Chicago (17ú heag.)John Herman Randall, Jr. Justus Buchler Evelyn Urban Shirk. Readings in Philosophy. Barnes Noble.
Lua MLA (8ú heag.)John Herman Randall, Jr. Justus Buchler Evelyn Urban Shirk. Readings in Philosophy. Barnes Noble.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.