APA (7th ed.) Zitazioa
U.S. Public Health Service. (1946). Manual of recommended water-sanitation practice.
Chicago Style (17th ed.) Zitazioa
U.S. Public Health Service. Manual of Recommended Water-sanitation Practice. 1946.
MLA (9th ed.) Zitazioa
U.S. Public Health Service. Manual of Recommended Water-sanitation Practice. 1946.
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