Messer, D. (1993). Mastery motivation in early childhood: Development, measurement, and social processes. Routledge.
Cita Chicago (17th ed.)Messer, David. Mastery Motivation in Early Childhood: Development, Measurement, and Social Processes. London: Routledge, 1993.
Cita MLA (9th ed.)Messer, David. Mastery Motivation in Early Childhood: Development, Measurement, and Social Processes. Routledge, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.