Richards, K., Harris, B., Shapiro, B., & Richards, T. (2014). Gus & me: The story of my granddad and my first guitar. Hatchette Audio/Mindless Records.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRichards, Keith, Barnaby Harris, Bill Shapiro, और Theodora Richards. Gus & Me: The Story of My Granddad and My First Guitar. [New York]: Hatchette Audio/Mindless Records, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRichards, Keith, et al. Gus & Me: The Story of My Granddad and My First Guitar. Hatchette Audio/Mindless Records, 2014.
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