APA (7e ed.) Bronvermelding
Harmin, M., & Sax, S. (1977). A peaceable classroom: Activities to calm and free student energies. Winston Press.
Chicago (17e ed.) Bronvermelding
Harmin, Merrill, en Saville Sax. A Peaceable Classroom: Activities to Calm and Free Student Energies. Minneapolis: Winston Press, 1977.
MLA (9e ed.) Bronvermelding
Harmin, Merrill, en Saville Sax. A Peaceable Classroom: Activities to Calm and Free Student Energies. Winston Press, 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.