Não informado. (2001). Annual report of the forest insect survey. Department of Agriculture, Division of Entomology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Annual Report of the Forest Insect Survey. Ottawa: Department of Agriculture, Division of Entomology, 2001.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Annual Report of the Forest Insect Survey. Department of Agriculture, Division of Entomology, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.