For April 2018, Oxford Constitutional Law adds four new constitutional documents, covering two countries, and the Oxford Commentary on the Constitution of the State of Georgia.
|Document Title||Country||Subnational Jurisdiction / Special Sovereignty
|Constitution of the German Reich: August 11, 1919||Germany|
|Constitution of the Republic of Sierra Leone: September 24, 1991 (as Amended to June 8, 2016)||Sierra Leone|
|The Republic of Sierra Leone: Introductory Note||Sierra Leone|
|The Republic of Sierra Leone: Select Bibliography||Sierra Leone|
|The Georgia State Constitution (Second Edition)||United States||Georgia|