Mary Brackett Willcox papers MC 10. Philadelphia Archdiocesan Historical Research Center.
Chicago Style (17. basım) AtıfMary Brackett Willcox Papers MC 10. Philadelphia Archdiocesan Historical Research Center.
MLA (8th ed.) AtıfMary Brackett Willcox Papers MC 10. Philadelphia Archdiocesan Historical Research Center.
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