Wilmore, A., & Payne, E. R. (1961). The groundwork of modern geography. Bell.
芝加哥风格引文Wilmore, Albert, 与 Ethel R. Payne. The Groundwork of Modern Geography. London: Bell, 1961.
MLA引文Wilmore, Albert, 与 Ethel R. Payne. The Groundwork of Modern Geography. Bell, 1961.
警告：这些引文格式不一定是100％准确.