I have Principles of Biblical Interpretation in the Lutheran Confessions by Bohlmann, Ralph A. (description below). Know of any similar resources based on the Westminster Confession or Heidelberg Confession?
"Lutherans regard their confessions as expositions of Holy Scripture and, therefore, as authoritative statements of Christian faith and life. This book will aid Lutheran pastors and students in understanding the confessional principles of Biblical interpretation. Its central thesis is that these principles are derived from the confessional doctrine of Holy Scripture.
The first part of the book analyzes the confessional understanding of the nature, function, and central content of Holy Scripture. The second illustrates how the major interpretative principles employed in the confessions are derived from Scripture. Particular attention is given to the influence of the Lutheran doctrine of justification by grace on Biblical interpretation. A newly provided 10th chapter addresses issues that have developed in the last decade."