Heroes Of Olympus 4

Penguin

The House of Hades (Heroes of Olympus Book 4): Percy Jackson's Deadliest Adventure Yet (Heroes of Olympus, 4)

Puffin

Heroes of Olympus: The Complete Series (Books 1, 2, 3, 4, 5) (English Edition)

Montena

Los Héroes del Olimpo, Libro 4: La casa de Hades / The Heroes of Olympus, Book Four: The House of Hades (Los héroes del Olimpo / The Heroes of Olympus, Band 4)

Carlsen

Helden des Olymp: Taschenbuchschuber Bände 1-5: Sieben Jugendliche, griechische Mythen und eine Prophezeiung – actionreiche Fantasy ab 12 Jahren

Generic

The Heroes of Olympus Series, 4 Books Collection Set, Lost Hero, Son of Neptune, The Mark of Athena, The House of Hades, by Rick Riordan

4 Book Heroes of Olympus Slipcase by Rick Riordan (2-Feb-2015) Paperback

Audible

The Mark of Athena: Heroes of Olympus, Book 3    

Audible

The Lost Hero (Heroes of Olympus Book 1)        

Puffin

The House of Hades: The Graphic Novel (Heroes of Olympus Book 4) (Heroes of Olympus Graphic Novels) (English Edition)

Hyperion Books for Children

The Heroes of Olympus Paperback Boxed Set (10th Anniversary Edition): The Lost Hero / the Son of Neptune / the Mark of Athena / the House of Hades / the Blood of Olympus