APA (7th ed.) Citation

Jones, A. L., & Aldwinckle, H. S. (1990). Compendium of apple and pear diseases. APS.

Chicago Style (17th ed.) Citation

Jones, A. L., and H. S. Aldwinckle. Compendium of Apple and Pear Diseases. Saint Paul: APS, 1990.

MLA (9th ed.) Citation

Jones, A. L., and H. S. Aldwinckle. Compendium of Apple and Pear Diseases. APS, 1990.