Cita APA (7a ed.)
Schell, R. E., & Hall, E. (1979). Developmental Psychology Today (3a ed.). CRM Random House.
Cita Chicago Style (17a ed.)
Schell, Robert E., y Elizabeth Hall. Developmental Psychology Today. 3a ed. New York: CRM Random House, 1979.
Cita MLA (9a ed.)
Schell, Robert E., y Elizabeth Hall. Developmental Psychology Today. 3a ed. CRM Random House, 1979.
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