Wilkes, C. (1849). Western America, including California and Oregon, with maps of those regions, and of "the Sacramento Valley". Lea & Blanchard.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wilkes, Charles. Western America, Including California and Oregon, with Maps of Those Regions, and of "the Sacramento Valley". Philadelphia: Lea & Blanchard, 1849.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wilkes, Charles. Western America, Including California and Oregon, with Maps of Those Regions, and of "the Sacramento Valley". Lea & Blanchard, 1849.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.