Cita APA (7th ed.)

Riordan Rick. (2012). Serpent's Shadow. Puffin Books.

Cita Chicago (17th ed.)

Riordan Rick. Serpent's Shadow. England: Puffin Books, 2012.

Cita MLA (9th ed.)

Riordan Rick. Serpent's Shadow. Puffin Books, 2012.