APA (7th ed.) Citation

United States. Public Health Service. (1941). Leonard's Appendix - and How it Burst. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Public Health Service. Leonard's Appendix - and How It Burst. [Washington]: [publisher not identified], 1941.

MLA (9th ed.) Citation

United States. Public Health Service. Leonard's Appendix - and How It Burst. [publisher not identified], 1941.