APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.