Let’s Study Philippians is a commentary written by Sinclair Ferguson, Professor of Systematic Theology at Westminster Theological Seminary. It is designed to be used by ordinary Christians in their individual study, family devotions and in small groups.
In the end matter he recommends the following commentaries For Further Reading;
William Hendriksen: A Commentary on the Epistle to the Philippians, Colossians and Philemon.
J.A. Motyer: The Message of Philippians: Jesus our Joy
Moises Silva: Philippians