APA (7th ed.) Citation

(1925). Authorised guide to the Tower of London (Under Revision, Crown Copyright Reserved.).

Chicago Style (17th ed.) Citation

Authorised Guide to the Tower of London. Under Revision, Crown Copyright Reserved. 1925.

MLA (9th ed.) Citation

Authorised Guide to the Tower of London. Under Revision, Crown Copyright Reserved. 1925.

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