APA-čujuhus (7. p.)
Frug, G. E., & Barron, D. J. (2008). City bound: How states stifle urban innovation. Cornell University Press.
Chicago-čujuhus (17. p.)
Frug, Gerald E., juo David J. Barron. City Bound: How States Stifle Urban Innovation. Ithaca: Cornell University Press, 2008.
MLA-čujuhus (9. p.)
Frug, Gerald E., juo David J. Barron. City Bound: How States Stifle Urban Innovation. Cornell University Press, 2008.
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