Cita APA (7a ed.)

Hoffman, P. B. (1997). History of the Federal Parole System: Part 1(1910-1972). Federal probation, 61(3), 23-31.

Cita Chicago Style (17a ed.)

Hoffman, Peter B. "History of the Federal Parole System: Part 1(1910-1972)." Federal Probation 61, no. 3 (1997): 23-31.

Cita MLA (8a ed.)

Hoffman, Peter B. "History of the Federal Parole System: Part 1(1910-1972)." Federal Probation, vol. 61, no. 3, 1997, pp. 23-31.