Heald, F. D. (1975). Manual of Plant Diseases. Eurasia Publishing House.
Cita Chicago (17th ed.)Heald, Frederick Deforest. Manual of Plant Diseases. New Delhi: Eurasia Publishing House, 1975.
Cita MLA (9th ed.)Heald, Frederick Deforest. Manual of Plant Diseases. Eurasia Publishing House, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.