Cita APA (7a ed.)

Kanada, National Parole Board, & Kanada National Parole Board. (1971). Statistics 1971.

Cita Chicago Style (17a ed.)

Kanada, National Parole Board, y Kanada National Parole Board. Statistics 1971. Ottawa, 1971.

Cita MLA (8a ed.)

Kanada, National Parole Board, y Kanada National Parole Board. Statistics 1971. 1971.