American Sunday-School Union. (1830). A help to the gospels: Containing a harmony, exercises, illustrations and practical lessons (2d ed.). American Sunday-School Union.
Lua i Stíl Chicago (17ú heag.)American Sunday-School Union. A Help to the Gospels: Containing a Harmony, Exercises, Illustrations and Practical Lessons. 2d ed. Philadelphia: American Sunday-School Union, 1830.
Lua MLA (8ú heag.)American Sunday-School Union. A Help to the Gospels: Containing a Harmony, Exercises, Illustrations and Practical Lessons. 2d ed. American Sunday-School Union, 1830.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.