APA (7th ed.) Zitazioa

Walls, C., & Breidenbach, R. (2008). Spring in action (2a. ed.). Manning Publications Co.

Chicago Style (17th ed.) Zitazioa

Walls, Craig, eta Ryan Breidenbach. Spring in Action. 2a. ed. Greenwich: Manning Publications Co, 2008.

MLA (9th ed.) Zitazioa

Walls, Craig, eta Ryan Breidenbach. Spring in Action. 2a. ed. Manning Publications Co, 2008.