Victoria Wai Lan Yeung, Pui Chuen Tam, and Eric Kenson Yau. 2022. “The Relative Effectiveness of Altruistic Vs. Egoistic Messages in Influencing Non-donors’ Intention to Donate Blood in Hong Kong”. Journal of Social Psychology Research 1 (2):97-110. https://doi.org/10.37256/jspr.1220221313.