(1991). Eastern hemisphere. Macmillan/McGraw Hill School Pub. Co..
芝加哥风格引文Eastern Hemisphere. New York: Macmillan/McGraw Hill School Pub. Co., 1991.
MLA引文Eastern Hemisphere. Macmillan/McGraw Hill School Pub. Co., 1991.
警告:这些引文格式不一定是100%准确.
(1991). Eastern hemisphere. Macmillan/McGraw Hill School Pub. Co..
芝加哥风格引文Eastern Hemisphere. New York: Macmillan/McGraw Hill School Pub. Co., 1991.
MLA引文Eastern Hemisphere. Macmillan/McGraw Hill School Pub. Co., 1991.