Cita APA (7a ed.)

Heumann, M., McDowall, D., & Loftin, C. (1982). Federal Firearms Policy and Mandatory Sentencing.

Cita Chicago Style (17a ed.)

Heumann, Milton, David McDowall, y Colin Loftin. Federal Firearms Policy and Mandatory Sentencing. 1982.

Cita MLA (9a ed.)

Heumann, Milton, et al. Federal Firearms Policy and Mandatory Sentencing. 1982.