(1931). [Letter of transmittal for pamphlets sent to Narcotics Bureau employees]. [publisher not identified].
Chicago Style (17th ed.) Citation[Letter of Transmittal for Pamphlets Sent to Narcotics Bureau Employees]. Washington, D.C.: [publisher not identified], 1931.
MLA (9th ed.) Citation[Letter of Transmittal for Pamphlets Sent to Narcotics Bureau Employees]. [publisher not identified], 1931.
Warning: These citations may not always be 100% accurate.