Symposium on the Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle. (1989). Management of lodgepole pine to minimize losses to the mountain pine beetle: Proceedings. United States Department of Agriculture.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Symposium on the Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle. Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle: Proceedings. United States: United States Department of Agriculture, 1989.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Symposium on the Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle. Management of Lodgepole Pine to Minimize Losses to the Mountain Pine Beetle: Proceedings. United States Department of Agriculture, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.