Não informado. (1917). The Plant Disease Bulletin. Department of Agriculture, Division of Mycology and Disease Survey.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. The Plant Disease Bulletin. Washington: Department of Agriculture, Division of Mycology and Disease Survey, 1917.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. The Plant Disease Bulletin. Department of Agriculture, Division of Mycology and Disease Survey, 1917.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.