APA (7th ed.) Citation

Marsden, J., & Winterbottom, M. (2010). Windsor Castle: Official souvenir guide. Royal Collection Enterprises Ltd.

Chicago Style (17th ed.) Citation

Marsden, Jonathan, and Matthew Winterbottom. Windsor Castle: Official Souvenir Guide. London: Royal Collection Enterprises Ltd, 2010.

MLA (9th ed.) Citation

Marsden, Jonathan, and Matthew Winterbottom. Windsor Castle: Official Souvenir Guide. Royal Collection Enterprises Ltd, 2010.

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