Cita APA (7a ed.)
SONNIER-YORK, C., & STANFORD, P. (2002). LEARNING TO COOPERATE. A TEACHER'S PERSPECTIVE.
Cita Chicago Style (17a ed.)
SONNIER-YORK, C., y P. STANFORD. LEARNING TO COOPERATE. A TEACHER'S PERSPECTIVE. 2002.
Cita MLA (9a ed.)
SONNIER-YORK, C., y P. STANFORD. LEARNING TO COOPERATE. A TEACHER'S PERSPECTIVE. 2002.
Precaución: Estas citas no son 100% exactas.