Mallock, W. H. (1879). Is life worth living? Belfords, Clarke & Co..
Lua i Stíl Chicago (17ú heag.)Mallock, W. H. Is Life Worth Living? Chicago: Belfords, Clarke & Co., 1879.
Lua MLA (8ú heag.)Mallock, W. H. Is Life Worth Living? Belfords, Clarke & Co., 1879.
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