Conrad, J., & Peck, S. R. (1968). The many worlds of man. Crowell.
Lua i Stíl Chicago (17ú heag.)Conrad, Jack, agus Stephen Rogers Peck. The Many Worlds of Man. New York: Crowell, 1968.
Lua MLA (8ú heag.)Conrad, Jack, agus Stephen Rogers Peck. The Many Worlds of Man. Crowell, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.