Duncan, E. H. (1979). Soren kierkegaard with an additional chapte. Word Book Publishers.
Lua i Stíl Chicago (17ú heag.)Duncan, Elmer H. Soren Kierkegaard with an Additional Chapte. Word Book Publishers, 1979.
Lua MLA (9ú heag.)Duncan, Elmer H. Soren Kierkegaard with an Additional Chapte. Word Book Publishers, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.