Zafra, J. (2011). Twisted 9. Anvil Pub.
Lua i Stíl Chicago (17ú heag.)Zafra, Jessica. Twisted 9. Mandaluyong City: Anvil Pub, 2011.
Lua MLA (9ú heag.)Zafra, Jessica. Twisted 9. Anvil Pub, 2011.
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