Παραπομπή σε μορφή APA (7η εκδ.)

American Sunday-School Union. (1830). A help to the gospels: Containing a harmony, exercises, illustrations and practical lessons (2d ed.). American Sunday-School Union.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (8th εκδ.)

American Sunday-School Union. A Help to the Gospels: Containing a Harmony, Exercises, Illustrations and Practical Lessons. 2d ed. American Sunday-School Union, 1830.