Riordan,Rick. (2015). The Serpent's Shadow. Puffin Books.
Chicago-čujuhus (17. p.)Riordan,Rick. The Serpent's Shadow. UK: Puffin Books, 2015.
MLA-čujuhus (9. p.)Riordan,Rick. The Serpent's Shadow. Puffin Books, 2015.
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