South Africa. Dept. of Health. (1930). Typhus or "louse fever": Memorandum issued by the Department of Public Health. Dept. of Public Health.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)South Africa. Dept. of Health. Typhus or "Louse Fever": Memorandum Issued by the Department of Public Health. Pretoria: Dept. of Public Health, 1930.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)South Africa. Dept. of Health. Typhus or "Louse Fever": Memorandum Issued by the Department of Public Health. Dept. of Public Health, 1930.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.