Gruber, J. M., Bress, E., Kutcher, A., Walters, M., & Smart, A. (2004). The butterfly effect (Directors cut, theatrical edition.). New Line Home Entertainment.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGruber, J. Mackye, Eric Bress, Ashton Kutcher, Melora Walters, और Amy Smart. The Butterfly Effect. Directors cut, theatrical edition. [United States]: New Line Home Entertainment, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGruber, J. Mackye, et al. The Butterfly Effect. Directors cut, theatrical edition. New Line Home Entertainment, 2004.
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