Cita APA (7a ed.)

Greenspan, S. (2012). Elements of Discipline: Nine Principles for Teachers and Parents. Temple University Press.

Cita Chicago Style (17a ed.)

Greenspan, Stephen. Elements of Discipline: Nine Principles for Teachers and Parents. Philadelphia, Pa.: Temple University Press, 2012.

Cita MLA (8a ed.)

Greenspan, Stephen. Elements of Discipline: Nine Principles for Teachers and Parents. Temple University Press, 2012.