Yablonsky, L. (1968). The hippie trip. Pegasus.
Cita Chicago (17th ed.)Yablonsky, Lewis. The Hippie Trip. New York: Pegasus, 1968.
Cita MLA (8th ed.)Yablonsky, Lewis. The Hippie Trip. Pegasus, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.