Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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