Reyes, E. D. (1956). The potassium-supplying and -fixing capacities of some Philippine soils.
Cita Chicago (17th ed.)Reyes, Edilberto D. The Potassium-supplying and -fixing Capacities of Some Philippine Soils. 1956.
Cita MLA (9th ed.)Reyes, Edilberto D. The Potassium-supplying and -fixing Capacities of Some Philippine Soils. 1956.
Atenció: Aquestes cites poden no estar 100% correctes.