Berkhof, Louis – Summary of Christian Doctrine

In this 22 chapter doctrines book, Berkhof (Presbyterian and Reformed) looks at some typical systematic theology themes: Revelation, Scripture, Nature-Names-Attributes of God, the Trinity, Creation, Divine Decrees, Providence, Man, Sin, States and offices of Christ, Salvation and Sanctification.

Cox, David – Understanding the Bible Doctrine of the Trinity

Cox details the evidence for the doctrine of the Trinity in the Bible looking dozens of different angles.

Anon – Basic Christian Doctrine

Anon Basic Christian Doctrine is a 50 Chapter doctrines book that is anonymous.

Shaw Of God and the Holy Trinity

Robert Shaw’s short 1 chapter work on God and the Holy Trinity is an excellent collection of observations and verses that defend the Trinity.

Dabney, R.L. – Systematic Theology

Dabney was a Baptist, and this work is his Systematic Theology. Dabney was also Calvinistic.