APA (7th ed.) Citation

(1939). Spies to-day. With 8 half-tone ills. London.

Chicago Style (17th ed.) Citation

Spies To-day. With 8 Half-tone Ills. London, 1939.

MLA (8th ed.) Citation

Spies To-day. With 8 Half-tone Ills. London, 1939.

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