APA (7th ed.) Citation

Johnson, P. (1989). Castles of England, Scotland and Wales (1st publ.). Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Johnson, Paul. Castles of England, Scotland and Wales. 1st publ. London: Weidenfeld and Nicolson, 1989.

MLA (9th ed.) Citation

Johnson, Paul. Castles of England, Scotland and Wales. 1st publ. Weidenfeld and Nicolson, 1989.

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