South Africa. Dept. of Health. (1940). House-flies: Their life-history, destruction and prevention, and their influence on health. Dept. of Public Health.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)South Africa. Dept. of Health. House-flies: Their Life-history, Destruction and Prevention, and Their Influence on Health. Pretoria: Dept. of Public Health, 1940.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)South Africa. Dept. of Health. House-flies: Their Life-history, Destruction and Prevention, and Their Influence on Health. Dept. of Public Health, 1940.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.