Cita APA (7a ed.)

Johnston, N. B., & Johnston, N. B. (1994). Eastern State Penitentiary: Crucible of good intentions. Univ. of Pennsylvania Pr.

Cita Chicago Style (17a ed.)

Johnston, Norman Bruce, y Norman Bruce Johnston. Eastern State Penitentiary: Crucible of Good Intentions. Philadelphia, Pa: Univ. of Pennsylvania Pr, 1994.

Cita MLA (8a ed.)

Johnston, Norman Bruce, y Norman Bruce Johnston. Eastern State Penitentiary: Crucible of Good Intentions. Univ. of Pennsylvania Pr, 1994.