Cita APA (7a ed.)

Duncan, A. R. C. (1990). On the nature of persons. Peter Lang.

Cita Chicago Style (17a ed.)

Duncan, Alastair R. C. On the Nature of Persons. New York [etc.]: Peter Lang, 1990.

Cita MLA (9a ed.)

Duncan, Alastair R. C. On the Nature of Persons. Peter Lang, 1990.