While historic Reformed Christianity has tenaciously held to Justification by faith alone, its consistent answer to the above question regarding the whole of our salvation has been: Yes. The concept is inherent in numerous parts of the Westminster standards.
The new webpage below contains many resources on this subject (the most that is anywhere available, it is believed) that will be helpful to further understanding the Bible’s teaching that good works are necessary to salvation.
The Introduction on the webpage is rather full and walks through the numerous Biblical and historical issues surrounding the question and introduces one to the many distinctions that Reformed Orthodoxy from the 1600’s made about it. The Introduction also distinguishes how the Biblical and orthodox teaching differs from modern heresies such as the Federal Vision, Norman Sherphardism and the New Perspective on Paul.
Numerous quotes have been translated for the first time from Latin from numerous of the older reformed theologians. You will likely learn a lot. May it be a blessing to you, and may we be zealous for good works (Titus 2:14).