APA (7th ed.) Citation

Senn, B. (1998). Tower of London (1939 and 1962).

Chicago Style (17th ed.) Citation

Senn, Bryan. Tower of London (1939 and 1962). 1998.

MLA (9th ed.) Citation

Senn, Bryan. Tower of London (1939 and 1962). 1998.

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