APA
O´Leary D., . (1997). New hearts, new models. Dublín: The Columba Press.
Chicago
O´Leary Daniel, . 1997. New hearts, new models. Dublín: The Columba Press.
Harvard
O´Leary D., . (1997). New hearts, new models. Dublín: The Columba Press.
MLA
O´Leary Daniel, . New hearts, new models. Dublín: The Columba Press. 1997.