MENGEKSPLORASI PERKEMBANGAN INDIVIDU MELALUI KELEKATAN DAN KEHILANGAN YANG DIGAMBARKAN DALAM NOVEL REMAJA BERTEMA IMIGRAN: JOURNEY OF THE SPARROWS (1991) DAN ESPERANZA RISING (2000) = EXPLORING INDIVIDUAL DEVELOPMENT THROUGH ATTACHMENT AND LOSS DEPICTED IN YOUNG ADULT IMMIGRANTS-THEMED NOVELS: JOURNEY OF THE SPARROWS (1991) AND ESPERANZA RISING (2000)