APA (7th ed.) Citation

Blackstock, P. W. (1969). The secret road to World War Two: Soviet versus western intelligence, 1921-1939. Quadrangle.

Chicago Style (17th ed.) Citation

Blackstock, Paul W. The Secret Road to World War Two: Soviet Versus Western Intelligence, 1921-1939. Chicago, Ill: Quadrangle, 1969.

MLA (8th ed.) Citation

Blackstock, Paul W. The Secret Road to World War Two: Soviet Versus Western Intelligence, 1921-1939. Quadrangle, 1969.