American Phytopathological Society, Jones, A., & Aldwinckle, H. (1991). Compendium of apple and pear diseases ([2nd printing].). American Phytopathological Society.
Chicago Style (17th ed.) CitationAmerican Phytopathological Society, Al Jones, and H.S Aldwinckle. Compendium of Apple and Pear Diseases. [2nd printing]. St. Paul: American Phytopathological Society, 1991.
MLA (9th ed.) CitationAmerican Phytopathological Society, et al. Compendium of Apple and Pear Diseases. [2nd printing]. American Phytopathological Society, 1991.
Warning: These citations may not always be 100% accurate.