Unger, M. F. (1955). Principles of expository preaching. Zondervan.
Lua i Stíl Chicago (17ú heag.)Unger, Merrill Frederick. Principles of Expository Preaching. Grand Rapids: Zondervan, 1955.
Lua MLA (9ú heag.)Unger, Merrill Frederick. Principles of Expository Preaching. Zondervan, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.