Wainwright, S., Lancashire, S., Norton, J., & Finneran, S. (2015). Happy Valley. Distributed in the USA and Canada by Warner Home Video.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWainwright, Sally, Sarah Lancashire, James Norton, और Siobhan Finneran. Happy Valley. Burbank, California: Distributed in the USA and Canada by Warner Home Video, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWainwright, Sally, et al. Happy Valley. Distributed in the USA and Canada by Warner Home Video, 2015.
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