Preston, L. (1997). Investing in mountains: Innovative mechanisms and promising examples for financing conservation and sustainable development. Mountain Institute].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Preston, Lynelle. Investing in Mountains: Innovative Mechanisms and Promising Examples for Financing Conservation and Sustainable Development. [Franklin, WV: Mountain Institute], 1997.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Preston, Lynelle. Investing in Mountains: Innovative Mechanisms and Promising Examples for Financing Conservation and Sustainable Development. Mountain Institute], 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.