Starr, P. (2019). " Index". In Entrenchment. New Haven (CT): Yale University Press. doi: https://doi.org/10.12987/9780300244823-010
Starr, Paul. " Index". Entrenchment. New Haven (CT): Yale University Press, 2019. https://doi.org/10.12987/9780300244823-010 Web.
Starr, Paul. " Index". In Entrenchment, (New Haven (CT): Yale University Press, 2019) doi: https://doi.org/10.12987/9780300244823-010
Starr, P. (2019). Index. In Entrenchment, New Haven (CT): Yale University Press. Available From: Yale University Press https://doi.org/10.12987/9780300244823-010 [Accessed 20 January 2021]