Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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.

Παραπομπή σε μορφή MLA (8th εκδ.)

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.