Ruhe, R. V. (1975). Geomorphology: Geomorphic processess and superficial geology. Houghton Mifflin Co.
芝加哥风格引文Ruhe, Robert V. Geomorphology: Geomorphic Processess and Superficial Geology. Boston: Houghton Mifflin Co, 1975.
MLA引文Ruhe, Robert V. Geomorphology: Geomorphic Processess and Superficial Geology. Houghton Mifflin Co, 1975.
警告：这些引文格式不一定是100％准确.