Sinclair, U. (1949). Letters to Judd: An American workingman (New and rev. ed.). Haldeman-Julius.
芝加哥风格引文Sinclair, Upton. Letters to Judd: An American Workingman. New and rev. ed. Girard, Kan.: Haldeman-Julius, 1949.
MLA引文Sinclair, Upton. Letters to Judd: An American Workingman. New and rev. ed. Haldeman-Julius, 1949.
警告：这些引文格式不一定是100％准确.