McDonald, C. H. (1996). Voices in the Big Sky: A concise history of radio and television in Montana from the 1920's to the present. Big M Broadcast Services.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)McDonald, C. Howard. Voices in the Big Sky: A Concise History of Radio and Television in Montana from the 1920's to the Present. Bozeman, Mont.: Big M Broadcast Services, 1996.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)McDonald, C. Howard. Voices in the Big Sky: A Concise History of Radio and Television in Montana from the 1920's to the Present. Big M Broadcast Services, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.