Cita APA (7th ed.)
Harmin, M., & Sax, S. (1977). A peaceable classroom: Activities to calm and free student energies. Winston Press.
Cita Chicago (17th ed.)
Harmin, Merrill, i Saville Sax. A Peaceable Classroom: Activities to Calm and Free Student Energies. Minneapolis: Winston Press, 1977.
Cita MLA (9th ed.)
Harmin, Merrill, i Saville Sax. A Peaceable Classroom: Activities to Calm and Free Student Energies. Winston Press, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.