Cita APA (7th ed.)
Levi, P. (1986). If not now, when? Penguin Books.
Cita Chicago (17th ed.)
Levi, Primo. If Not Now, When? New York, N.Y., U.S.A.: Penguin Books, 1986.
Cita MLA (9th ed.)
Levi, Primo. If Not Now, When? Penguin Books, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.