Petrie, C. (1946). George Canning ([2nd ed.].). Eyre & Spottiswoode.
芝加哥风格引文Petrie, Charles. George Canning. [2nd ed.]. London: Eyre & Spottiswoode, 1946.
MLA引文Petrie, Charles. George Canning. [2nd ed.]. Eyre & Spottiswoode, 1946.
警告：这些引文格式不一定是100％准确.