APA (7th ed.) Citation

Coldren, J. R., & Perrin, R. A. (1978). Data on extortion in Illinois. Criminal Justice Information Systems.

Chicago Style (17th ed.) Citation

Coldren, James R., and Ruth A. Perrin. Data on Extortion in Illinois. Chicago: Criminal Justice Information Systems, 1978.

MLA (8th ed.) Citation

Coldren, James R., and Ruth A. Perrin. Data on Extortion in Illinois. Criminal Justice Information Systems, 1978.