APA (7th ed.) Citation

Oman, C. (1926). Castles. The Great Western Railway.

Chicago Style (17th ed.) Citation

Oman, Charles. Castles. London: The Great Western Railway, 1926.

MLA (9th ed.) Citation

Oman, Charles. Castles. The Great Western Railway, 1926.

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