Henkel, P. (1816). The Christian catechism: Composed for the instruction of youth, in the knowledge of the Christian religion (5th ed., from enl. 4th ed.). S. Henkel.
Chicago-referens (17:e uppl.)Henkel, Paul. The Christian Catechism: Composed for the Instruction of Youth, in the Knowledge of the Christian Religion. 5th ed., from enl. 4th ed. New Market, Va.: S. Henkel, 1816.
MLA-referens (8:e uppl.)Henkel, Paul. The Christian Catechism: Composed for the Instruction of Youth, in the Knowledge of the Christian Religion. 5th ed., from enl. 4th ed. S. Henkel, 1816.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.