@misc{indiciaec9003712bd9f, title = {Prosocial involvement as a positive youth development construct: conceptual bases and implications for curriculum development.}, author = {Howard C H Cheng and Andrew M H Siu and Mana C M Leung}, url = {https://pubmed.ncbi.nlm.nih.gov/17068921/}, note = {Source identifier: 17068921} }