共 39 条
[1]
*AM SCH HLTH ASS S, 1989, NAT AD STUD HLTH SUR
[5]
School disconnectedness: Identifying adolescents at risk
[J].
PEDIATRICS,
2000, 106 (05)
:1017-1021
[6]
Cohen J., 1988, Statistical power analysis for the behavioural sciences, V2nd
[8]
Comer JamesP., 1980, SCH POWER IMPLICATIO
[10]
Fraser MW, 1996, SOC WORK, V41, P347