Philippine National Oil Company. Energy Development Corporation. (1996). The living mountain: Celebrating Mt. Apo. Philippine National Oil Company, Energy Development Corporation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippine National Oil Company. Energy Development Corporation. The Living Mountain: Celebrating Mt. Apo. [Manila]: Philippine National Oil Company, Energy Development Corporation, 1996.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippine National Oil Company. Energy Development Corporation. The Living Mountain: Celebrating Mt. Apo. Philippine National Oil Company, Energy Development Corporation, 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.