Kopp, S. B. (1978). An end to innocence: Facing life without illusions. Macmillan.
Cita Chicago (17th ed.)Kopp, Sheldon B. An End to Innocence: Facing Life Without Illusions. New York: Macmillan, 1978.
Cita MLA (9th ed.)Kopp, Sheldon B. An End to Innocence: Facing Life Without Illusions. Macmillan, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.