APA (7th ed.) Citation

British Travel Association. (1949). Londres (2a ed., Ed. en español.). British Travel Association.

Chicago Style (17th ed.) Citation

British Travel Association. Londres. 2a ed., Ed. en español. Londres: British Travel Association, 1949.

MLA (9th ed.) Citation

British Travel Association. Londres. 2a ed., Ed. en español. British Travel Association, 1949.

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