Ward, G. (2005). Survival beyond the 10 essentials. Survival and Outdoor Safety.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWard, Gene. Survival Beyond the 10 Essentials. [Antioch, CA]: Survival and Outdoor Safety, 2005.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWard, Gene. Survival Beyond the 10 Essentials. Survival and Outdoor Safety, 2005.
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