Willink, J., & Bozak, J. (2019). Where there's a will... (First edition.). Jocko Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWillink, Jocko, और Jon Bozak. Where There's a Will... First edition. Houston, Texas: Jocko Publishing, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWillink, Jocko, और Jon Bozak. Where There's a Will... First edition. Jocko Publishing, 2019.
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