Freeman, H. C. (1900). A brief history of Butte, Montana, the world's greatest mining camp: Including a story of the extraction and treatment of ores from its gigantic copper properties .. H. O. Shepard Co., printers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Freeman, Harry Campbell. A Brief History of Butte, Montana, the World's Greatest Mining Camp: Including a Story of the Extraction and Treatment of Ores from Its Gigantic Copper Properties .. Chicago: H. O. Shepard Co., printers, 1900.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Freeman, Harry Campbell. A Brief History of Butte, Montana, the World's Greatest Mining Camp: Including a Story of the Extraction and Treatment of Ores from Its Gigantic Copper Properties .. H. O. Shepard Co., printers, 1900.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.