University of London. Chelsea College. Centre for Science Education. conservation Education Project & Kelly, P. (1975). People and resources. Evans Brothers.
Čikaški stil citiranja (17. izdanje)University of London. Chelsea College. Centre for Science Education. conservation Education Project i Peter Kelly. People and Resources. London: Evans Brothers, 1975.
MLA način citiranja (9. izdanje)University of London. Chelsea College. Centre for Science Education. conservation Education Project i Peter Kelly. People and Resources. Evans Brothers, 1975.
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