Coloma, S. 'Back to the future' through agriculture. Manila Bulletin..
Cita Chicago (17th ed.)Coloma, Sonny. "'Back to the Future' Through Agriculture." Manila Bulletin. .
Cita MLA (9th ed.)Coloma, Sonny. "'Back to the Future' Through Agriculture." Manila Bulletin., .
Atenció: Aquestes cites poden no estar 100% correctes.