Bigham, T. C. (1952). Transportation, principles and problems (2nd ed.). McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBigham, Truman C. Transportation, Principles and Problems. 2nd ed. New York: McGraw-Hill, 1952.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBigham, Truman C. Transportation, Principles and Problems. 2nd ed. McGraw-Hill, 1952.
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