Philippines (Republic). Industrial Development Center. (1956). Cotton: Cultivation, grading, and marketing. [s.n.
Cita Chicago (17th ed.)Philippines (Republic). Industrial Development Center. Cotton: Cultivation, Grading, and Marketing. Manila: [s.n, 1956.
Cita MLA (9th ed.)Philippines (Republic). Industrial Development Center. Cotton: Cultivation, Grading, and Marketing. [s.n, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.