Villegas, B. M. (1989). Even pessimists forecast growth for the country. IN The Positive sum game [column]. Manila Chronicle.
Chicago-referens (17:e uppl.)Villegas, Bernardo M. "Even Pessimists Forecast Growth for the Country. IN The Positive Sum Game [column]." Manila Chronicle 1989.
MLA-referens (9:e uppl.)Villegas, Bernardo M. "Even Pessimists Forecast Growth for the Country. IN The Positive Sum Game [column]." Manila Chronicle, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.