Zablocki, B. (1971). The joyful community. Penguin.
Cita Chicago (17th ed.)Zablocki, Benjamin. The Joyful Community. Baltimore: Penguin, 1971.
Cita MLA (9th ed.)Zablocki, Benjamin. The Joyful Community. Penguin, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.