APA (7th ed.) Citation

Great Western Railway. (1926). Cathedrals. Great Western Railway.

Chicago Style (17th ed.) Citation

Great Western Railway. Cathedrals. London: Great Western Railway, 1926.

MLA (9th ed.) Citation

Great Western Railway. Cathedrals. Great Western Railway, 1926.

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