Butler, E. B., & Kellogg, P. U. (1909). Women and the trades: Pittsburgh, 1907-1908. Charities Publication Committee.
芝加哥风格引文Butler, Elizabeth Beardsley, 与 Paul Underwood Kellogg. Women and the Trades: Pittsburgh, 1907-1908. N.Y.: Charities Publication Committee, 1909.
MLA引文Butler, Elizabeth Beardsley, 与 Paul Underwood Kellogg. Women and the Trades: Pittsburgh, 1907-1908. Charities Publication Committee, 1909.
警告：这些引文格式不一定是100％准确.