Cita APA (7th ed.)

(1991). Eastern hemisphere. Macmillan/McGraw Hill School Pub. Co..

Cita Chicago (17th ed.)

Eastern Hemisphere. New York: Macmillan/McGraw Hill School Pub. Co., 1991.

Cita MLA (8th ed.)

Eastern Hemisphere. Macmillan/McGraw Hill School Pub. Co., 1991.