Duane, W. J. (1811). Letters addressed to the people of Pennsylvania: Respecting the internal improvement, of the commonwealth; by means of roads and canals. Printed by J. Aitken.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Duane, William J. Letters Addressed to the People of Pennsylvania: Respecting the Internal Improvement, of the Commonwealth; by Means of Roads and Canals. Philadelphia: Printed by J. Aitken, 1811.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Duane, William J. Letters Addressed to the People of Pennsylvania: Respecting the Internal Improvement, of the Commonwealth; by Means of Roads and Canals. Printed by J. Aitken, 1811.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.