Grubb, M. (1993). The "Earth Summit" agreements: A guide and assessment, an analysis of the Rio ’92 UN Conference on Environment and Development. Earthscan Publications Ltd. ; Brookings Institution [distributor].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Grubb, Michael. The "Earth Summit" Agreements: A Guide and Assessment, an Analysis of the Rio ’92 UN Conference on Environment and Development. London : Washington, DC: Earthscan Publications Ltd. ; Brookings Institution [distributor], 1993.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Grubb, Michael. The "Earth Summit" Agreements: A Guide and Assessment, an Analysis of the Rio ’92 UN Conference on Environment and Development. Earthscan Publications Ltd. ; Brookings Institution [distributor], 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.