Munitz, M. K. (1968). The mystery of existence. Dell.
Lua i Stíl Chicago (17ú heag.)Munitz, Milton K. The Mystery of Existence. New York: Dell, 1968.
Lua MLA (9ú heag.)Munitz, Milton K. The Mystery of Existence. Dell, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.