APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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