Citazione Stile APA (7a Edizione)

Gaspar, K., Graham, H., & Noonan, B. (1985). How long?: Prison reflections of Karl Gaspar. Claretian Publications.

Citazione stile Chigago Style (17a edizione)

Gaspar, Karl, Helen Graham, e Breda Noonan. How Long?: Prison Reflections of Karl Gaspar. Quezon City: Claretian Publications, 1985.

Citatione MLA (9a ed.)

Gaspar, Karl, et al. How Long?: Prison Reflections of Karl Gaspar. Claretian Publications, 1985.