Παραπομπή σε μορφή APA (7η εκδ.)

Henkel, P. (1811). The first chief head of the Christian catechism: For the instruction of youth in the knowledge of the Christian religion, together with morning and evening hymns, and prayers. Ambrose Henkel.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Henkel, Paul. The First Chief Head of the Christian Catechism: For the Instruction of Youth in the Knowledge of the Christian Religion, Together with Morning and Evening Hymns, and Prayers. New-Market [Va.]: Ambrose Henkel, 1811.

Παραπομπή σε μορφή MLA (8th εκδ.)

Henkel, Paul. The First Chief Head of the Christian Catechism: For the Instruction of Youth in the Knowledge of the Christian Religion, Together with Morning and Evening Hymns, and Prayers. Ambrose Henkel, 1811.