SCOPE/Unep Symposium on Environmental Sciences in Developing Countries Nairobi, International Council of Scientific Unions. Scientific Committee on Problems of the Environment, United Nations Environment Programme, & Dworkin, D. M. (1974). Environmental sciences in developing countries: Summary reports and recommendations. publisher not identified ; available from SCOPE Secretariat.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)SCOPE/Unep Symposium on Environmental Sciences in Developing Countries Nairobi, International Council of Scientific Unions. Scientific Committee on Problems of the Environment, United Nations Environment Programme, و Daniel M. Dworkin. Environmental Sciences in Developing Countries: Summary Reports and Recommendations. Indianapolis : Paris: publisher not identified ; available from SCOPE Secretariat, 1974.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)SCOPE/Unep Symposium on Environmental Sciences in Developing Countries Nairobi, et al. Environmental Sciences in Developing Countries: Summary Reports and Recommendations. publisher not identified ; available from SCOPE Secretariat, 1974.