Usman, E. K. (1997). Time for dialogue of life: Christmas and Ramadhan occur in a single month. Manila Bulletin.
Chicago-viite (17. p.)Usman, Edd K. "Time for Dialogue of Life: Christmas and Ramadhan Occur in a Single Month." Manila Bulletin 1997.
MLA-viite (9. p.)Usman, Edd K. "Time for Dialogue of Life: Christmas and Ramadhan Occur in a Single Month." Manila Bulletin, 1997.
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