APA aipamena

Riordan,Rick. (2015). Heroes of Olympus: The House of Hedes. Puffin Books.

Chicago Style aipamena

Riordan,Rick. Heroes of Olympus: The House of Hedes. UK: Puffin Books, 2015.

MLA aipamena

Riordan,Rick. Heroes of Olympus: The House of Hedes. Puffin Books, 2015.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.