Lua APA (7ú heag.)
Santayana, G., Wokeck, M. S., & Coleman, M. A. (2013). The life of reason, or, The phases of human progress (Critical ed.). MIT Press.
Lua i Stíl Chicago (17ú heag.)
Santayana, George, Marianne Sophia Wokeck, agus Martin A. Coleman. The Life of Reason, or, The Phases of Human Progress. Critical ed. Cambridge, Mass.: MIT Press, 2013.
Lua MLA (9ú heag.)
Santayana, George, et al. The Life of Reason, or, The Phases of Human Progress. Critical ed. MIT Press, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.