Lockley, F., & Helm, M. (1981). Conversations with bullwhackers, muleskinners, pioneers, prospectors, '49ers, Indian fighters, trappers, ex-barkeepers, authors, preachers, poets & near poets & all sorts & conditions of men: Voices of the Oregon Territory. Rainy Day Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lockley, Fred, و Mike Helm. Conversations with Bullwhackers, Muleskinners, Pioneers, Prospectors, '49ers, Indian Fighters, Trappers, Ex-barkeepers, Authors, Preachers, Poets & Near Poets & All Sorts & Conditions of Men: Voices of the Oregon Territory. Eugene, Or.: Rainy Day Press, 1981.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lockley, Fred, و Mike Helm. Conversations with Bullwhackers, Muleskinners, Pioneers, Prospectors, '49ers, Indian Fighters, Trappers, Ex-barkeepers, Authors, Preachers, Poets & Near Poets & All Sorts & Conditions of Men: Voices of the Oregon Territory. Rainy Day Press, 1981.