Gabor, B. K. (1997). Onion diseases: A practical guide for seedsmen, growers and agricultural advisors. Seminis Vegetable Seeds.
Citazione stile Chigago Style (17a edizione)Gabor, Brad K. Onion Diseases: A Practical Guide for Seedsmen, Growers and Agricultural Advisors. Saticoy: Seminis Vegetable Seeds, 1997.
Citatione MLA (9a ed.)Gabor, Brad K. Onion Diseases: A Practical Guide for Seedsmen, Growers and Agricultural Advisors. Seminis Vegetable Seeds, 1997.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.