(1921). [Poster ""To all former service men,'' Public Health Service letter of transmittal]. [publisher not identified].
Chicago Style (17th ed.) Citation[Poster ""To All Former Service Men,'' Public Health Service Letter of Transmittal]. Washington, D.C.: [publisher not identified], 1921.
MLA (9th ed.) Citation[Poster ""To All Former Service Men,'' Public Health Service Letter of Transmittal]. [publisher not identified], 1921.
Warning: These citations may not always be 100% accurate.