Chicago Park District (Ill.) & Lohmann, J. D. (1947). The police and minority groups: A manual prepared for use in the Chicago Park District Police Training School. [publisher not identified].
Chicago Style (17th ed.) CitationChicago Park District (Ill.) and Joseph Dean Lohmann. The Police and Minority Groups: A Manual Prepared for Use in the Chicago Park District Police Training School. Chicago: [publisher not identified], 1947.
MLA (9th ed.) CitationChicago Park District (Ill.) and Joseph Dean Lohmann. The Police and Minority Groups: A Manual Prepared for Use in the Chicago Park District Police Training School. [publisher not identified], 1947.
Warning: These citations may not always be 100% accurate.