Cita APA (7a ed.)

Guinness, D., & Ryan, W. (1974). Irish Houses and Castles. Studio Book.

Cita Chicago Style (17a ed.)

Guinness, Desmond, y William Ryan. Irish Houses and Castles. New York: Studio Book, 1974.

Cita MLA (9a ed.)

Guinness, Desmond, y William Ryan. Irish Houses and Castles. Studio Book, 1974.