Riley, S. (2021). Helena Star: An epic adventure through the murky underworld of international drug smuggling. Robert Reed Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRiley, Stewart. Helena Star: An Epic Adventure Through the Murky Underworld of International Drug Smuggling. Bandon, Oregon: Robert Reed Publishers, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRiley, Stewart. Helena Star: An Epic Adventure Through the Murky Underworld of International Drug Smuggling. Robert Reed Publishers, 2021.
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