Crowe, F. E. (1968). A time of change: Guidelines for the perplexed Catholic. Bruce Pub. Co.
Čikaški stil citiranja (17. izdanje)Crowe, Frederick E. A Time of Change: Guidelines for the Perplexed Catholic. Milwaukee: Bruce Pub. Co, 1968.
MLA način citiranja (8. izdanje)Crowe, Frederick E. A Time of Change: Guidelines for the Perplexed Catholic. Bruce Pub. Co, 1968.
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