APA (7th ed.) Citation

Lunn, A. (1937). Spain, The Unpopular Front. London.

Chicago Style (17th ed.) Citation

Lunn, Arnold. Spain, The Unpopular Front. London, 1937.

MLA (8th ed.) Citation

Lunn, Arnold. Spain, The Unpopular Front. London, 1937.

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