APA (7th ed.) Citation

Johnson, R. J. (1975). Zagranichnaia Agentura: The Tzarist political police in Europe. Police forces in history.

Chicago Style (17th ed.) Citation

Johnson, Richard J. "Zagranichnaia Agentura: The Tzarist Political Police in Europe." Police Forces in History 1975.

MLA (8th ed.) Citation

Johnson, Richard J. "Zagranichnaia Agentura: The Tzarist Political Police in Europe." Police Forces in History, 1975.

Warning: These citations may not always be 100% accurate.