(2000). Farmer-scientist proclaims benefits of organic farming. Tao-Kalikasan.
Cita Chicago (17th ed.)"Farmer-scientist Proclaims Benefits of Organic Farming." Tao-Kalikasan 2000.
Cita MLA (9th ed.)"Farmer-scientist Proclaims Benefits of Organic Farming." Tao-Kalikasan, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.