Valcarcel, L. J. (2001). Sustainable development and environmental accounting for Philippine manufacturing firms. College of Business Administration, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Valcarcel, Lina J. Sustainable Development and Environmental Accounting for Philippine Manufacturing Firms. Diliman, Quezon City: College of Business Administration, University of the Philippines, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Valcarcel, Lina J. Sustainable Development and Environmental Accounting for Philippine Manufacturing Firms. College of Business Administration, University of the Philippines, 2001.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.