Gaya APA
Lerner, R, M. (1993).
Early adolescence : perspective on research, policy and intervention .
Hillsdale, NJ:
Lawrence Erlbaum.
Gaya MLA
Lerner, Richard, M..
"Early adolescence : perspective on research, policy and intervention".
Hillsdale, NJ:
Lawrence Erlbaum,
1993.
Text.