APA (7th ed.) Citation

(2012). Tunnels and tunnelling (International edition.). World Market Intelligence.

Chicago Style (17th ed.) Citation

Tunnels and Tunnelling. International edition. London: World Market Intelligence, 2012.

MLA (9th ed.) Citation

Tunnels and Tunnelling. International edition. World Market Intelligence, 2012.

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