Plant Pathology Laboratory. (1976). Manual of plant growth stages and disease assessment keys. [Plant Pathology Laboratory].
Chicago Style (17th ed.) CitationPlant Pathology Laboratory. Manual of Plant Growth Stages and Disease Assessment Keys. [Harpenden, Herts]: [Plant Pathology Laboratory], 1976.
MLA (9th ed.) CitationPlant Pathology Laboratory. Manual of Plant Growth Stages and Disease Assessment Keys. [Plant Pathology Laboratory], 1976.
Warning: These citations may not always be 100% accurate.