Porter, G. (1976). Regional economic history. Eleutherian Mills-Hagley Foundation.
芝加哥风格引文Porter, Glenn. Regional Economic History. Greenville, Delaware: Eleutherian Mills-Hagley Foundation, 1976.
MLA引文Porter, Glenn. Regional Economic History. Eleutherian Mills-Hagley Foundation, 1976.
警告：这些引文格式不一定是100％准确.