APA (7th ed.) Citation

United States. Bureau of Narcotics. (1931). [Labeling samples of narcotics for chemical analysis, instructions]. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Bureau of Narcotics. [Labeling Samples of Narcotics for Chemical Analysis, Instructions]. [Washington]: [publisher not identified], 1931.

MLA (9th ed.) Citation

United States. Bureau of Narcotics. [Labeling Samples of Narcotics for Chemical Analysis, Instructions]. [publisher not identified], 1931.

Warning: These citations may not always be 100% accurate.