Schrag, P. (1974). Test of loyalty: Daniel Ellsberg and the rituals of secret government / Peter Schrag. Simon and Schuster.
Cita Chicago (17th ed.)Schrag, Peter. Test of Loyalty: Daniel Ellsberg and the Rituals of Secret Government / Peter Schrag. New York: Simon and Schuster, 1974.
Cita MLA (8th ed.)Schrag, Peter. Test of Loyalty: Daniel Ellsberg and the Rituals of Secret Government / Peter Schrag. Simon and Schuster, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.