Henkel, P. (1811). The Christian catechism: Composed for the instruction of youth in the knowledge of the Christian religion, together with morning and evening hymns, prayers, etc (2nd ed.). Ambrose Henkel.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Henkel, Paul. The Christian Catechism: Composed for the Instruction of Youth in the Knowledge of the Christian Religion, Together with Morning and Evening Hymns, Prayers, Etc. 2nd ed. Shenandoah County, Va.: Ambrose Henkel, 1811.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Henkel, Paul. The Christian Catechism: Composed for the Instruction of Youth in the Knowledge of the Christian Religion, Together with Morning and Evening Hymns, Prayers, Etc. 2nd ed. Ambrose Henkel, 1811.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.