Head and the Heart (Musical group). (2016). Signs of light. Warner Bros..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHead and the Heart (Musical group). Signs of Light. Burbank, CA: Warner Bros., 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHead and the Heart (Musical group). Signs of Light. Warner Bros., 2016.
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