Guth, A. R., & Cohen, S. (1989). Red skies of '88: The 1988 forest fire season in the northern Rockies, the northern Great Plains and the greater Yellowstone area. Pictorial Histories Pub. Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Guth, A. Richard, و Stan Cohen. Red Skies of '88: The 1988 Forest Fire Season in the Northern Rockies, the Northern Great Plains and the Greater Yellowstone Area. Missoula, MT: Pictorial Histories Pub. Co., 1989.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Guth, A. Richard, و Stan Cohen. Red Skies of '88: The 1988 Forest Fire Season in the Northern Rockies, the Northern Great Plains and the Greater Yellowstone Area. Pictorial Histories Pub. Co., 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.