Não informado. (1960). Canadian plant disease survey. Plant Research Institute, Department of Agriculture.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Canadian Plant Disease Survey. Ottawa: Plant Research Institute, Department of Agriculture, 1960.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Canadian Plant Disease Survey. Plant Research Institute, Department of Agriculture, 1960.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.