Παραπομπή σε μορφή APA (7η εκδ.)

Villegas, B. M. (1989). Even pessimists forecast growth for the country. IN The Positive sum game [column]. Manila Chronicle.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Villegas, Bernardo M. "Even Pessimists Forecast Growth for the Country. IN The Positive Sum Game [column]." Manila Chronicle 1989.

Παραπομπή σε μορφή MLA (9th εκδ.)

Villegas, Bernardo M. "Even Pessimists Forecast Growth for the Country. IN The Positive Sum Game [column]." Manila Chronicle, 1989.