APA Citation

Sheldon, T. (1998). Dutch whooping cough epidemic puzzles scientists. BMJ Group.

Citação norma Chicago

Sheldon, T. Dutch Whooping Cough Epidemic Puzzles Scientists. BMJ Group, 1998.

MLA Citation

Sheldon, T. Dutch Whooping Cough Epidemic Puzzles Scientists. BMJ Group, 1998.

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