Burr, J. R., & Goldinger, M. (1978). Philosophy and contemporary issues (2nd ed.). Macmillan.
Lua i Stíl Chicago (17ú heag.)Burr, John R., agus Milton Goldinger. Philosophy and Contemporary Issues. 2nd ed. New York: Macmillan, 1978.
Lua MLA (9ú heag.)Burr, John R., agus Milton Goldinger. Philosophy and Contemporary Issues. 2nd ed. Macmillan, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.