Cita APA (7th ed.)

Riordan,Rick. (2015). Heroes of olympus: The blood of olympus. Puffin Books.

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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