"Riordan, R. (2010). Percy Jackson and the Last Olympian (Book 5) (5th.). Scholastic/Hyperion.
Dyfyniad Arddull Chicago"Riordan, Rick". Percy Jackson and the Last Olympian (Book 5). 5th. Scholastic/Hyperion, 2010.
Dyfyniad MLA"Riordan, Rick". Percy Jackson and the Last Olympian (Book 5). 5th. Scholastic/Hyperion, 2010.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.