Butler, E. B., & Kellogg, P. U. (1909). Women and the trades: Pittsburgh, 1907-1908. Charities Publication Committee.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रButler, Elizabeth Beardsley, और Paul Underwood Kellogg. Women and the Trades: Pittsburgh, 1907-1908. N.Y.: Charities Publication Committee, 1909.
एमएलए (8वां संस्करण) प्रशस्ति पत्रButler, Elizabeth Beardsley, और Paul Underwood Kellogg. Women and the Trades: Pittsburgh, 1907-1908. Charities Publication Committee, 1909.
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