APA (7th ed.) Citation
Watkins, R., Resources, I. B. f. P. G., Smith, R., & Commission, E. (1982). Descriptors list for apple (Malus). International Board for Plant Genetic Resources.
Chicago Style (17th ed.) Citation
Watkins, R., International Board for Plant Genetic Resources, R.A Smith, and European Commission. Descriptors List for Apple (Malus). International Board for Plant Genetic Resources, 1982.
MLA (9th ed.) Citation
Watkins, R., et al. Descriptors List for Apple (Malus). International Board for Plant Genetic Resources, 1982.
Warning: These citations may not always be 100% accurate.