Cogburn, B. (2020). Gunpowder express (Large print edition.). Wheeler Publishing, a part of Gale, a Cengage Company.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCogburn, Brett. Gunpowder Express. Large print edition. Waterville, ME: Wheeler Publishing, a part of Gale, a Cengage Company, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCogburn, Brett. Gunpowder Express. Large print edition. Wheeler Publishing, a part of Gale, a Cengage Company, 2020.
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