(1942). I believe: The personal philosophies of twenty-three eminent men and women of our time. Allen & Unwin.
Čikaški stil citiranja (17. izdanje)I Believe: The Personal Philosophies of Twenty-three Eminent Men and Women of Our Time. London: Allen & Unwin, 1942.
MLA način citiranja (8. izdanje)I Believe: The Personal Philosophies of Twenty-three Eminent Men and Women of Our Time. Allen & Unwin, 1942.
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