Ridker, R. G. (1976). Changing resource problems of the fourth world / Ronald G. Ridker, editor. Resources for the Future.
Chicago Edition CitationRidker, Ronald Gene. Changing Resource Problems of the Fourth World / Ronald G. Ridker, Editor. Washington, D.C.: Resources for the Future, 1976.
MLA Edition CitationRidker, Ronald Gene. Changing Resource Problems of the Fourth World / Ronald G. Ridker, Editor. Resources for the Future, 1976.
Warning: These citations may not always be 100% accurate.