APA (7th ed.) Citation

Richardson, D. M. (1919). The tunnel. Duckworth.

Chicago Style (17th ed.) Citation

Richardson, Dorothy Miller. The Tunnel. London: Duckworth, 1919.

MLA (8th ed.) Citation

Richardson, Dorothy Miller. The Tunnel. Duckworth, 1919.

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