Não informado. (1968). Abstracts on hygiene. Bureau of Hygiene and Tropical Diseases.
Chicagoスタイル(17版)引用形式Não informado. Abstracts on Hygiene. London: Bureau of Hygiene and Tropical Diseases, 1968.
MLA(8版)引用形式Não informado. Abstracts on Hygiene. Bureau of Hygiene and Tropical Diseases, 1968.
警告: この引用は必ずしも正確ではありません.