[{"id":"eastern-orthodox-1","type":"webpage","title":"Eastern Orthodox: The Acts of the Seven Ecumenical Councils.","URL":"/tree/eastern-orthodox"},{"id":"eastern-orthodox-2","type":"webpage","title":"Eastern Orthodox: John Meyendorff, Byzantine Theology (1979).","URL":"/tree/eastern-orthodox"},{"id":"protestant-1","type":"webpage","title":"Protestant: The Augsburg Confession (1530).","URL":"/tree/protestant"},{"id":"protestant-2","type":"webpage","title":"Protestant: Alister E. McGrath, Reformation Thought (2012).","URL":"/tree/protestant"}]