Michael Tonry, Richard Frase: Sentencing and Sanctions in Western Countries. Oxford University Press, 31.5.2001. ISBN 978-0-19-535011-1Teoksen verkkoversio Viitattu 1.5.2022. (englanniksi)
Peter John Boyce: The Queen's Other Realms: The Crown and Its Legacy in Australia, Canada and New Zealand. Federation Press, 2008. ISBN 978-1-86287-700-9Teoksen verkkoversio Viitattu 1.5.2022. (englanniksi)