APA-viite (7. p.)

Perone, U. (2011). The possible present. State University of New York Press.

Chicago-viite (17. p.)

Perone, Ugo. The Possible Present. Albany: State University of New York Press, 2011.

MLA-viite (9. p.)

Perone, Ugo. The Possible Present. State University of New York Press, 2011.