RT Article T1 Parental and peer support in adolescence JF The social world of adolescents SP 167 OP 183 A1 Meeus, Wim LA English YR 1989 UL https://krimdok.uni-tuebingen.de/Record/1474376258 SN 311011996X K1 Eltern-Peer-Konflikt K1 Jugendforschung K1 Niederlande