APA aipamena

Riordan,Rick. (2015). The Serpent's Shadow. Puffin Books.

Chicago Style aipamena

Riordan,Rick. The Serpent's Shadow. UK: Puffin Books, 2015.

MLA aipamena

Riordan,Rick. The Serpent's Shadow. Puffin Books, 2015.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.