APA

Fagan S., . (1997). Does morality change?. Dublín: Gill Macmillan.

Chicago

Fagan Seán, . 1997. Does morality change?. Dublín: Gill Macmillan.

Harvard

Fagan S., . (1997). Does morality change?. Dublín: Gill Macmillan.

MLA

Fagan Seán, . Does morality change?. Dublín: Gill Macmillan. 1997.