Cita APA (7th ed.)
Perone, U. (2011). The possible present. State University of New York Press.
Cita Chicago (17th ed.)
Perone, Ugo. The Possible Present. Albany: State University of New York Press, 2011.
Cita MLA (9th ed.)
Perone, Ugo. The Possible Present. State University of New York Press, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.