United Nations Educational, Scientist and Cultural Organization. (1956). Unesco source books for science teaching Q181 .U4. United Nations Educational Scientific and Cultural Organization.
Čikaški stil citiranja (17. izdanje)United Nations Educational, Scientist and Cultural Organization. Unesco Source Books for Science Teaching Q181 .U4. Paris: United Nations Educational Scientific and Cultural Organization, 1956.
MLA način citiranja (9. izdanje)United Nations Educational, Scientist and Cultural Organization. Unesco Source Books for Science Teaching Q181 .U4. United Nations Educational Scientific and Cultural Organization, 1956.
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