Παραπομπή APA

(1968). Urban and regional information systems: Support for planning in Metropolitan Areas. Washington: U.S. Government Printing Office.

Παραπομπή Chicago Style

Urban and Regional Information Systems: Support for Planning in Metropolitan Areas. Washington: U.S. Government Printing Office, 1968.

Παραπομπή MLA

Urban and Regional Information Systems: Support for Planning in Metropolitan Areas. Washington: U.S. Government Printing Office, 1968.

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