Gutnam, o., & Popenoe, D. (1963). Urban studies ; present trends and future prospects in an emerging academic field. s.n.
Čikaški stil citiranja (17. izdanje)Gutnam, obert, i David Popenoe. Urban Studies ; Present Trends and Future Prospects in an Emerging Academic Field. Princeton, N. J: s.n, 1963.
MLA način citiranja (9. izdanje)Gutnam, obert, i David Popenoe. Urban Studies ; Present Trends and Future Prospects in an Emerging Academic Field. s.n, 1963.
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