APA (7th ed.) Citation

Guinness, D., & Ryan, W. (1971). Irish houses and castles. Thames & Hudson.

Chicago Style (17th ed.) Citation

Guinness, Desmond, and William Ryan. Irish Houses and Castles. London: Thames & Hudson, 1971.

MLA (9th ed.) Citation

Guinness, Desmond, and William Ryan. Irish Houses and Castles. Thames & Hudson, 1971.

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