Gram, E., Bovien, P., & Stapel, C. (1980). Recognition and control of pests and diseases of farm crops (2nd ed., rev. and enl.). Blandford Press.
Chicago Style (17th ed.) CitationGram, Ernst, Prosper Bovien, and Chr Stapel. Recognition and Control of Pests and Diseases of Farm Crops. 2nd ed., rev. and enl. Poole, [England]: Blandford Press, 1980.
MLA (9th ed.) CitationGram, Ernst, et al. Recognition and Control of Pests and Diseases of Farm Crops. 2nd ed., rev. and enl. Blandford Press, 1980.
Warning: These citations may not always be 100% accurate.