Very Revd Thomas F. Torrance 
The Christian Doctrine of God, One Being Three Persons [PDF ebook] 

Written by one of the twentieth-century”s foremost modern Trinitarian theologians
The Christian Doctrine of God remains a classic ground work for scholars and students alike.
In the book Thomas F. Torrance offers a detailed study of the most profound article of the Christian faith – the Holy Trinity. Torrance adopts a holistic approach when examining the inter-relatedness of the three persons – Father, son, and Holy Spirit – and their dynamic Communion with the Being and Nature of God. Combining immense academic range with his characteristically fresh theological perspectives, Torrance builds a significant theological bridge between ancient and modern, as well as between the Roman and Protestant theology; he engages deeply with the Church Fathers and discusses the ontological nature of God. Here Torrance conveys a simple message – the doctrine of the Trinity is the doctrine of God.
This
Cornerstones edition includes a new introduction written by Professor Paul D. Molnar, in which Molnar sets Torrance”s classic work in its modern context and considers how it continues to influence the way we think about the Trinity today.