Não informado. (2021). Research Division Bulletin. Virginia Polytechnique Institute and State University.
Čikaški stil citiranja (17. izdanje)Não informado. Research Division Bulletin. Blacksburg, Va: Virginia Polytechnique Institute and State University, 2021.
MLA način citiranja (8. izdanje)Não informado. Research Division Bulletin. Virginia Polytechnique Institute and State University, 2021.
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