National Municipal League. (1952). A guide for charter commissions (2nd rev. ed.). National Municipal League.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNational Municipal League. A Guide for Charter Commissions. 2nd rev. ed. New York: National Municipal League, 1952.
एमएलए (9वां संस्करण) प्रशस्ति पत्रNational Municipal League. A Guide for Charter Commissions. 2nd rev. ed. National Municipal League, 1952.
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