Alegria, R. (2005). The Appreciative Perspective of the Future. Journal of Futures Studies, 10(1), 101-108. https://www.airitilibrary.com/Article/Detail?DocID=a0000188-200508-10-1-101-108-a
Wong, C. H. (1990). The business of futures [master's thesis, The University of Hong Kong]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0029-1812201200003571
Bezold, C. (2009). Aspirational Futures. Journal of Futures Studies, 13(4), 81-89. https://www.airitilibrary.com/Article/Detail?DocID=10276084-200905-13-4-81-89-a