Chicago Charities Directory Association & Sonneborn, I. (1905). Chicago charities directory: A descriptive exhibit of the philanthropic, social and religious resources of the city of Chicago.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChicago Charities Directory Association और Ida Sonneborn. Chicago Charities Directory: A Descriptive Exhibit of the Philanthropic, Social and Religious Resources of the City of Chicago. [Chicago], 1905.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChicago Charities Directory Association और Ida Sonneborn. Chicago Charities Directory: A Descriptive Exhibit of the Philanthropic, Social and Religious Resources of the City of Chicago. 1905.
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