Wallbank , W. T., & Taylor, A. M. (1949). Civilization: Past and present (4th ed.). Scott, Foresman and company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWallbank , Walter T., और Alastair M. Taylor. Civilization: Past and Present. 4th ed. Chicago: Scott, Foresman and company, 1949.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWallbank , Walter T., और Alastair M. Taylor. Civilization: Past and Present. 4th ed. Scott, Foresman and company, 1949.
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