Clanton Harpine, E. (2011). Group-centered prevention programs for at-risk students. Springer eBooks.. https://doi.org/10.1007/978-1-4419-7248-4
Cita Chicago (17th ed.)Clanton Harpine, Elaine. "Group-centered Prevention Programs for At-risk Students." Springer EBooks. 2011. https://doi.org/10.1007/978-1-4419-7248-4.
Cita MLA (9th ed.)Clanton Harpine, Elaine. "Group-centered Prevention Programs for At-risk Students." Springer EBooks., 2011, https://doi.org/10.1007/978-1-4419-7248-4.
Atenció: Aquestes cites poden no estar 100% correctes.