Não informado. (1968). Abstracts on hygiene. Bureau of Hygiene and Tropical Diseases.
Style de citation Chicago (17e éd.)Não informado. Abstracts on Hygiene. London: Bureau of Hygiene and Tropical Diseases, 1968.
Style de citation MLA (8e éd.)Não informado. Abstracts on Hygiene. Bureau of Hygiene and Tropical Diseases, 1968.
Attention : ces citations peuvent ne pas être correctes à 100%.