https://readanybooks.com/book/11044-the-sea-of-monsters
* Koko tekstiarkisto - Percy Jackson ja olympialaiset
https://archive.org/details/PercyJackson02_980
* LibriVox-äänikirjat – Hirviöiden meri
https://librivox.org/the-sea-of-monsters-by-rick-riordan/