South Africa. Dept. of Health. (1940). House-flies: Their life-history, destruction and prevention, and their influence on health. Dept. of Public Health.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)South Africa. Dept. of Health. House-flies: Their Life-history, Destruction and Prevention, and Their Influence on Health. Pretoria: Dept. of Public Health, 1940.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)South Africa. Dept. of Health. House-flies: Their Life-history, Destruction and Prevention, and Their Influence on Health. Dept. of Public Health, 1940.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.