Abrahams, P. (2009). Into the dark: An Echo Falls mystery (1st Harper Trophy ed.). Laura Geringer Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAbrahams, Peter. Into the Dark: An Echo Falls Mystery. 1st Harper Trophy ed. New York: Laura Geringer Books, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रAbrahams, Peter. Into the Dark: An Echo Falls Mystery. 1st Harper Trophy ed. Laura Geringer Books, 2009.
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