Zafra, J. (1998). Planet of the twisted. Anvil.
Cita Chicago (17th ed.)Zafra, Jessica. Planet of the Twisted. Pasig City: Anvil, 1998.
Cita MLA (9th ed.)Zafra, Jessica. Planet of the Twisted. Anvil, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.