United States. Public Health Service. (1941). But Flu is Tougher...Don't Try to be Tough with Flu, It is Tougher than You. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Public Health Service. But Flu Is Tougher...Don't Try to Be Tough with Flu, It Is Tougher than You. [Washington]: [publisher not identified], 1941.
MLA (9th ed.) CitationUnited States. Public Health Service. But Flu Is Tougher...Don't Try to Be Tough with Flu, It Is Tougher than You. [publisher not identified], 1941.
Warning: These citations may not always be 100% accurate.