United Nations Educational, Scientific and Cultural Organization, & Lengyel, P. (1971). Approaches to the science of socio-economic development: Edited by Peter Lengyel, with contributions by Raymond Aron and others. Unesco.
Chicago Style (17. basım) AtıfUnited Nations Educational, Scientific and Cultural Organization, ve Peter Lengyel. Approaches to the Science of Socio-economic Development: Edited by Peter Lengyel, with Contributions by Raymond Aron and Others. Paris: Unesco, 1971.
MLA (9th ed.) AtıfUnited Nations Educational, Scientific and Cultural Organization, ve Peter Lengyel. Approaches to the Science of Socio-economic Development: Edited by Peter Lengyel, with Contributions by Raymond Aron and Others. Unesco, 1971.
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