Blackhall, J. C. (2000). Planning law and practice (2rd ed.). Cavendish.
Lua i Stíl Chicago (17ú heag.)Blackhall, J. Cameron. Planning Law and Practice. 2rd ed. London ; Portland, Or.: Cavendish, 2000.
Lua MLA (9ú heag.)Blackhall, J. Cameron. Planning Law and Practice. 2rd ed. Cavendish, 2000.
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