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Diiulio, John J., Governing Prisons: A Comparative Study of Correctional Management, Simon and Schuster, 1990. ISBN 0-02-907883-0

Dupont, Jerry, "The Common Law Abroad: Constitutional and Legal Legacy of the British Empire", Wm. S. Hein Publishing, 2001. ISBN 0-8377-3125-9, ISBN 978-0-8377-3125-4

Johnsen, Thomas C., "Vita: Howard Belding Gill: Brief Life of a Prison Reformer: 1890–1989", Harvard Magazine, September–October 1999, p. 54.

Serrill, M. S., "Norfolk – A Retrospective – New Debate Over a Famous Prison Experiment," Corrections Magazine, Volume 8, Issue 4 (August 1982), pp. 25–32.

Mun Cheong Yong, V. V. Bhanoji Rao, "Singapore-India Relations: A Primer", Study Group on Singapore-India Relations, National University of Singapore Centre for Advanced Studies Contributor Mun Cheong Yong, V. V. Bhanoji Rao, Yong Mun Cheong, Published by NUS Press, 1995. ISBN 9971-69-195-7, ISBN 978-9971-69-195-0