Mangum, G. L. (1964). The Operating Engineers: The economic history of a trade union. Harvard University Press.
芝加哥风格引文Mangum, Garth L. The Operating Engineers: The Economic History of a Trade Union. Cambridge: Harvard University Press, 1964.
MLA引文Mangum, Garth L. The Operating Engineers: The Economic History of a Trade Union. Harvard University Press, 1964.
警告：这些引文格式不一定是100％准确.