Lua APA (7ú heag.)
Haggai, J. E. (1959). How to win over worry. Zondervan Publishing.
Lua i Stíl Chicago (17ú heag.)
Haggai, John Edmund. How to Win over Worry. Grand Rapids: Zondervan Publishing, 1959.
Lua MLA (9ú heag.)
Haggai, John Edmund. How to Win over Worry. Zondervan Publishing, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.