APA引文

Morris, J. W., & Freeman, O. W. (1972). World geography (3d ed.). McGraw-Hill.

芝加哥风格引文

Morris, John W., 与 Otis Willard Freeman. World Geography. 3d ed. New York: McGraw-Hill, 1972.

MLA引文

Morris, John W., 与 Otis Willard Freeman. World Geography. 3d ed. McGraw-Hill, 1972.

警告:这些引文格式不一定是100%准确.