Gass, P. (1807). A journal of the voyages and travels of a corps of discovery: Under the command of Capt. Lewis and Capt. Clarke of the army of the United States, from the mouth of the river Missouri through the interior parts of North America to the Pacific Ocean, during the years 1804, 1805 & 1806 ... Printed by Zadok Cramer, for David M'Keehan.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gass, Patrick. A Journal of the Voyages and Travels of a Corps of Discovery: Under the Command of Capt. Lewis and Capt. Clarke of the Army of the United States, from the Mouth of the River Missouri Through the Interior Parts of North America to the Pacific Ocean, During the Years 1804, 1805 & 1806 ... Pittsburgh: Printed by Zadok Cramer, for David M'Keehan, 1807.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gass, Patrick. A Journal of the Voyages and Travels of a Corps of Discovery: Under the Command of Capt. Lewis and Capt. Clarke of the Army of the United States, from the Mouth of the River Missouri Through the Interior Parts of North America to the Pacific Ocean, During the Years 1804, 1805 & 1806 ... Printed by Zadok Cramer, for David M'Keehan, 1807.