Riordan, R. (2007). Percy Jackson and the sea of monsters. Penguin Random House.
Chicago-čujuhus (17. p.)Riordan, Rick. Percy Jackson and the Sea of Monsters. USA: Penguin Random House, 2007.
MLA-čujuhus (9. p.)Riordan, Rick. Percy Jackson and the Sea of Monsters. Penguin Random House, 2007.
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