APA način citiranja (7. izdanje)

Villegas, B. M. (1989). Cooperatives key to economic progress of agriculture sector. IN The Positive sum game [column]. Manila Chronicle.

Čikaški stil citiranja (17. izdanje)

Villegas, Bernardo M. "Cooperatives Key to Economic Progress of Agriculture Sector. IN The Positive Sum Game [column]." Manila Chronicle 1989.

MLA način citiranja (9. izdanje)

Villegas, Bernardo M. "Cooperatives Key to Economic Progress of Agriculture Sector. IN The Positive Sum Game [column]." Manila Chronicle, 1989.