Riordan, R. (2015). Heroes of Olympus: The son of neptune. Puffin Books.
Chicago-čujuhus (17. p.)Riordan, Rick. Heroes of Olympus: The Son of Neptune. UK: Puffin Books, 2015.
MLA-čujuhus (9. p.)Riordan, Rick. Heroes of Olympus: The Son of Neptune. Puffin Books, 2015.
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