Cita APA (7th ed.)

Riordan,Rick. (2015). The Serpent's Shadow. Puffin Books.

Cita Chicago (17th ed.)

Riordan,Rick. The Serpent's Shadow. UK: Puffin Books, 2015.

Cita MLA (9th ed.)

Riordan,Rick. The Serpent's Shadow. Puffin Books, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.