Johnstone, W. W., & Johnstone, J. A. (2019). Springfield 1880 (Large print edition.). Wheeler Publishing, a part of Gale, a Cengage Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnstone, William W., और J. A. Johnstone. Springfield 1880. Large print edition. Waterville, Maine: Wheeler Publishing, a part of Gale, a Cengage Company, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJohnstone, William W., और J. A. Johnstone. Springfield 1880. Large print edition. Wheeler Publishing, a part of Gale, a Cengage Company, 2019.
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