APA Citation

Ritchie, J., & Armstrong, E. (1932). A Water-borne Epidemic of Typhoid Fever.

Citação norma Chicago

Ritchie, John, and Edward Armstrong. A Water-borne Epidemic of Typhoid Fever. 1932.

MLA Citation

Ritchie, John, and Edward Armstrong. A Water-borne Epidemic of Typhoid Fever. 1932.

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