Não informado. (1908). Contributions from the Department of Entomology. University of Nebraska, Department of Entomology.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. Contributions from the Department of Entomology. Lincoln, Neb: University of Nebraska, Department of Entomology, 1908.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. Contributions from the Department of Entomology. University of Nebraska, Department of Entomology, 1908.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.