(1931). [Patent medicines containing narcotics; request to Narcotics Bureau for information on prevalence]. [publisher not identified].
Chicago Style (17th ed.) Citation[Patent Medicines Containing Narcotics; Request to Narcotics Bureau for Information on Prevalence]. Washington, D.C.: [publisher not identified], 1931.
MLA (9th ed.) Citation[Patent Medicines Containing Narcotics; Request to Narcotics Bureau for Information on Prevalence]. [publisher not identified], 1931.
Warning: These citations may not always be 100% accurate.