Conrad, J. (1964). The many worlds of man (ed.). Thomas Y Cromwell.
Lua i Stíl Chicago (17ú heag.)Conrad, Jack. The Many Worlds of Man. ed. New York: Thomas Y Cromwell, 1964.
Lua MLA (9ú heag.)Conrad, Jack. The Many Worlds of Man. ed. Thomas Y Cromwell, 1964.
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