APA (7th ed.) Citation

Block, C., & Block, R. (1980). Patterns of Change in Chicago Homicide: The Twenties, the Sixties, and the Seventies, 2nd ed. Illinois Law Enforcement Commission.

Chicago Style (17th ed.) Citation

Block, Carolyn, and Richard Block. Patterns of Change in Chicago Homicide: The Twenties, the Sixties, and the Seventies, 2nd Ed. [Erscheinungsort nicht ermittelbar]: Illinois Law Enforcement Commission, 1980.

MLA (9th ed.) Citation

Block, Carolyn, and Richard Block. Patterns of Change in Chicago Homicide: The Twenties, the Sixties, and the Seventies, 2nd Ed. Illinois Law Enforcement Commission, 1980.