APA (7th ed.) Citation

(1917). Number of vaccinations against smallpox. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Number of Vaccinations Against Smallpox. [Washington, D.C.]: U.S. Government Printing Office, 1917.

MLA (9th ed.) Citation

Number of Vaccinations Against Smallpox. U.S. Government Printing Office, 1917.

Warning: These citations may not always be 100% accurate.