Cullen, S. (2013). The secret shame of children's jails. World Mission.
Lua i Stíl Chicago (17ú heag.)Cullen, Shay. "The Secret Shame of Children's Jails." World Mission 2013.
Lua MLA (9ú heag.)Cullen, Shay. "The Secret Shame of Children's Jails." World Mission, 2013.
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