APA
Dack G. M., . (1943). Food poisoning. Chicago: The university of Chicago press.
Chicago
Dack G M, . 1943. Food poisoning. Chicago: The university of Chicago press.
Harvard
Dack G. M., . (1943). Food poisoning. Chicago: The university of Chicago press.
MLA
Dack G M, . Food poisoning. Chicago: The university of Chicago press. 1943.