APA (7th ed.) Citation

Phillips, A. (1961). Caernarvon Castle: An illustrated souvenir = Castell Caernarfon. HMSO.

Chicago Style (17th ed.) Citation

Phillips, Alan. Caernarvon Castle: An Illustrated Souvenir = Castell Caernarfon. London: HMSO, 1961.

MLA (9th ed.) Citation

Phillips, Alan. Caernarvon Castle: An Illustrated Souvenir = Castell Caernarfon. HMSO, 1961.

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