South Asia Co-operative Environment Programme, United Nations Environment Programme, Norwegian Agency for Development Co-operation, Abeyegunawardene, P. D., Kurukulasuriya, L., & Cory, C. (1997). South Asia handbook of treaties and other legal instruments in the field of environmental law. South Asia Co-operative Environment Programme, United Nations Environment Programme.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)South Asia Co-operative Environment Programme, United Nations Environment Programme, Norwegian Agency for Development Co-operation, Prasantha Dias Abeyegunawardene, Lal Kurukulasuriya, و Clare Cory. South Asia Handbook of Treaties and Other Legal Instruments in the Field of Environmental Law. Colombo, Sri Lanka: South Asia Co-operative Environment Programme, United Nations Environment Programme, 1997.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)South Asia Co-operative Environment Programme, et al. South Asia Handbook of Treaties and Other Legal Instruments in the Field of Environmental Law. South Asia Co-operative Environment Programme, United Nations Environment Programme, 1997.