Cita APA

(1990). The Soviet Union: A systematic geography. London: Hodder and Houghton.

Chicago Style Citation

The Soviet Union: A Systematic Geography. London: Hodder and Houghton, 1990.

Cita MLA

The Soviet Union: A Systematic Geography. London: Hodder and Houghton, 1990.

Atenció: Aquestes cites poden no estar 100% correctes.