Cita APA (7th ed.)
Beyer, B., Carven, J., McFarland, M. A., & Parker, W. C. (1990). Eastern hemisphere. New York.
Cita Chicago (17th ed.)
Beyer, Barry, Jean Carven, Mary A. McFarland, i Walter C. Parker. Eastern Hemisphere. Macmillan: New York, 1990.
Cita MLA (9th ed.)
Beyer, Barry, et al. Eastern Hemisphere. New York, 1990.
Atenció: Aquestes cites poden no estar 100% correctes.