Cita APA (7a ed.)

Boehm, R. G. (2005). Western hemisphere, Europe and Russia. Glencoe, McGraw-Hill.

Cita Chicago Style (17a ed.)

Boehm, Richard G. Western Hemisphere, Europe and Russia. New York, NY [u.a.]: Glencoe, McGraw-Hill, 2005.

Cita MLA (9a ed.)

Boehm, Richard G. Western Hemisphere, Europe and Russia. Glencoe, McGraw-Hill, 2005.